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+Release Notes
+===
+
+ 0.5.0 `Ristretto` 2017-01-02 02:35
+---
+### Enhancements
+* Update year to 2017 (Happy New Year!)
+* Update to improve editor performance by debounce checkEditorScrollbar event
+* Refactor data processing to model definition
+* Update to remove null byte on editor changes
+* Update to remove null byte before saving to DB
+* Update to support Esperanto locale
+* Little improvements (typos, uppercase + accents, better case) for French locale
+* Update features.md publish button name and icon
+
+### Fixes
+* Fix authorship might losing update event because of throttling
+* Fix migration script of revision lacks of definition of primary key
+* Fix to not use diff_cleanupSemantic
+* Fix URL concatenation when uploading images to local filesystem
+* Fix js-url not import correctly
+* Fixed typo: anonmyous
+* Fix codemirror spell checker not considering abbreviation which contain apostrophe in word
+* Fix possible user is undefined in realtime events
+* Fix wrong package name reference in webpack config for bootstrap-validator
+* Fix email option in config not parse correctly
+* Fix mathjax not able to render issue
+
+### Removes
+- Remove LZString compression for data storage
+- Remove LZString compression for some socket.io event data
+
+ 0.4.6 `Melya` 2016-12-19 17:20
+---
+### Features
++ Add support of allow free url config option
++ Add support of allow anonymous config option
++ Add preferences to editor status bar and add allow override browser keymap option
++ Add support of s3 and local filesystem for image uploading
++ Add of support optional email register and signin
++ Use uWebSocket to improve websocket performance
++ Use CDNJS by default with https and SRI support
++ Use Webpack to bundle frontend code
+
+### Enhancements
+* Update to make TOC syntax be case-insensitive
+* Update to handle request with invalid uri
+* Update to auto generate meta description based on content in publish note and slide
+* Update to support haskell, go, typescript and jsx syntax highlighting in code block
+* Update to use workers to leverage intensive work loading
+* Update to support summary tag
+* Change use cdn config option default to be true
+* Update to retry when anytime the socket io disconnect
+* Change to raise socket io timeout, heartbeat interval and timeout to lower offline period
+* Update emoji parser using markdown-it-emoji instead of emojify
+* Optimize finishView selector performance by avoid universal selector
+* Config heroku deployment
+* Update to support Hindi, Swedish locale
+* Update to support wrap syntax for code block
+* Update to support pagination for history list
+
+### Fixes
+* Fix slide mode on print pdf not finish view rendering
+* Fix when server have heavy loading cache might not update to db properly
+* Fix redirection to url without trailing slashes not considering about config urlpath
+* Fix header id and text might affects by mathjax tags
+* Fix possible meta XSS in history list [Security Issue]
+* Fix possible XSS in yaml-metadata and turn using ejs escape syntax than external lib [Security Issue]
+* Fix to allow data attribute of section tag in slide
+* Fix slide might able to add unsafe attribute on section tag which cause XSS [Security Issue]
+* Fix slide might trigger script when processing markdown which cause XSS [Security Issue]
+* Fix published note won't scroll to hash on load
+* Fix mathjax with blockquote might have race condition
+* Fix server reconnect might not resend pending operations
+* Fix slide export pdf styles not applied issue
+* Fix possible unclose HTML and leaked html tags when fail to parse diagrams
+* Fix typos in the `slide-example.md`
+* Fix socket io doc event should setDoc when revision mismatch and no outstanding operation
+* Fix markdown styles conflicting bootstrap on p and ul under alert area
+* Fix finishView mermaid might select and replace whole markdown-body issue
+* Fix code block which in deeper level will not be parsed issue
+* Fix code block highlighting html not escaped when no languages specified
+* Fix client socket on delete event might not delete corresponding history record correctly
+* Fix to handle name or color is undefined error
+* Fix history item event not bind properly on pagination change
+* Fix history time should save in UNIX timestamp to avoid time offset issue
+
+### Removes
+- Drop bower the package manager
+- Remove auto linkify image
+
+ 0.4.5 `latte` 2016-10-11 01:22
+---
+### Features
++ Add more environment variables for server configuration
++ Add setup script for getting started
++ Add support of deleting note
++ Add support of shortcut keys which can add and remove symbol surround text
++ Add support of shortcut keys for changing mode
++ Add support of i18n (English, Chinese, French, German, Japanese, Spanish, Portuguese, Greek, Italian, Turkish, Russian, Dutch, Croatian, Polish, Ukrainian)
++ Add support of note info API
++ Add support of disqus via yaml-metadata
+
+### Enhancements
+* Optimize png images by using zopflipng
+* Update CodeMirror to 5.19.0 and rename jade to pug
+* Update to add cache to history and improve its performance
+* Update default indent to use spaces instead of tabs
+* Improve syntax highlighting performance
+* Update to make client handle syncing error better, use delay to avoid wrong document revision
+* Update to allow CORS as API on revision actions
+* Update to support showing owner on the infobar
+* Update to prevent duplicate client push in queue to lower down server loading
+* Reduce update view debounce time to make preview refresh quicker
+* Update help modal cheatsheet font styles to make it more clear on spaces
+* Update to add revision saving policy
+* Update to support tiddlywiki and mediawiki syntax highlighting in editor
+* Update to support save mode to url and vise versa
+* Update edit and publish icon and change toggle icon for UX
+* Improve authorship markers update performance
+* Update slide mode to show extra info and support url actions
+* Change the last change user saving strategy
+* Update to support data uri in src attribute of image tag
+* Improve index layout and UX with UI adjustments
+* Update XSS policy to allow iframe and link with custom protocol
+* Update markdown styles to follow github latest layout styles
+* Update slide mode, now respect all meta settings and update default styles
+* Update to make ToC menu always accessible without scrolling
+* Update to make doc only update while filesystem content not match db content
+
+### Fixes
+* Fix README and features document format and grammar issues
+* Fix some potential memory leaks bugs
+* Fix history storage might not fallback correctly
+* Fix to make mathjax expression display in editor correctly (not italic)
+* Fix note title might have unstriped html tags
+* Fix client reconnect should resend last operation
+* Fix a bug when setting both maxAge and expires may cause user can't signin
+* Fix text complete extra tags for blockquote and referrals
+* Fix bug that when window close will make ajax fail and cause cookies set to wrong state
+* Fix markdown render might fall into regex infinite loop
+* Fix syntax error caused by element contain special characters
+* Fix reference error caused by some scripts loading order
+* Fix ToC id naming to avoid possible overlap with user ToC
+* Fix header nav bar rwd detect element should use div tag or it might glitch the layout
+* Fix textcomplete of extra tags for blockquote not match space character in the between
+* Fix text-shadow for text antialiased might cause IE or Edge text cutoff
+
+### Removes
+- Cancel updating history on page unload
+
+ 0.4.4 `mocha` 2016-08-02 17:10
+---
+### Features
+* Add support of showing authorship in editor
+* Add support of saving authorship
+* Add support of saving authors
+* Add support of slide preview in both mode
+* Add support of all extra syntax in slide mode
+
+### Enhancements
+* Update realtime check and refresh event, compress data to minimize network transfer delay
+* Update to keep showing second level TOC if there is only one first level TOC
+* Update to add expand and collapse toggle for TOC
+* Update to make help modal and text complete hint using consistent reminder text
+* Update to support slideOptions in the yaml metadata for customize slides
+* Update to support redirect back to previous url after signin
+* Update to avoid duplicated rendering slides and reduce DOM wrap
+* Update CodeMirror to version 5.17.1
+* Update to make random color more discrete
+* Update user icon styles to make avatar more obvious
+* Update Bootstrap to 3.3.7 and jQuery to 3.1.0 with related patches
+* Update spell checker to ignore non-english or numeric alphabets
+* Update to auto rolling session for auto extending cookies expiration
+* Update some menu items and UIs
+* Update to reduce realtime timeout and heartbeat interval to handle stale clients quicker
+* Update to force note, publish note, publish slide redirect to their expected url
+* Update to change server pre-rendering engine to markdown-it
+
+### Fixes
+* Workaround vim mode might overwrite copy keyMap on Windows
+* Fix TOC might not update after changeMode
+* Workaround slide mode gets glitch and blurry text on Firefox 47+
+* Fix idle.js not change isAway property on onAway and onAwayBack events
+* Fix http body request entity too large issue
+* Fix google-diff-match-patch encodeURI exception issue
+* Fix yaml metadata title should pass to generateWebTitle
+* Fix spellcheck settings from cookies might not a boolean in string type
+* Fix cookies might not in boolean type cause page refresh loop
+* Fix the signin and logout redirect url might be empty
+* Fix realtime might not clear or remove invalid sockets in queue
+* Fix slide not refresh layout on ajax item loaded
+* Fix retryOnDisconnect not clean up after reconnected
+* Fix some potential memory leaks
+
+ 0.4.3 `espresso` 2016-06-28 02:04
+---
+### Features
+* Add support of spellcheck
+* Add support of light editor theme
+* Add support of embed pdf
+* Add support of exporting raw html
+* Add revision modal with UIs and support marking patch diff texts
+* Add support of saving note revision
+
+### Enhancements
+* Update to extend login info cookies to 365 days to reduce reductant page refresh
+* Update to support new metadata: title, description, tags and google-analytics
+* Prevent crawling editing note to enhance privacy
+* Update to remove all data lines attributes to gain better update performance
+* Update refresh modal to show more detail informations
+* Update to make cursor tag default as hover mode to prevent tag overlay other lines
+* Update highlight.js to version 9.4.0 and use bower dependency
+* Improve history performance
+
+### Fixes
+* Fix history filter tags and search keyword might not apply after refresh
+* Fix part class in list item might infect buildMap process
+* Fix pdf tmp path is missing a folder slash before timestamp
+* Fix realtime connection get stock when lots of client try to connect at same moment
+* Fix locked or private permission should block any operation if owner is null
+* Add back missing support of image size syntax in 0.4.2
+* Fix update permission might cause duplicate view rendering
+* Fix on paste long document to editor might cause scroll not syncing
+* Workaround CodeMirror won't draw selections outside of the viewport
+* Fix to make socket keep retry after disconnect on server maintenance
+
+### Removes
+- Remove metadata spellcheck support
+- Remove robot meta on note edit page and html template
+
+
+ 0.4.2 `cappuccino` 2016-04-22 10:43
+---
+### Features
++ Support sync scrolling to edit area
++ Support import and export with GitLab snippet
++ Support GitLab signin
++ Add cheatsheet and help modal
+
+### Enhancements
+* Upgrade CodeMirror to version 5.15.3
+* Support maintenance mode and gracefully exit process on signal
+* Update to update doc in db when doc in filesystem have newer modified time
+* Update to replace animation acceleration library from gsap to velocity
+* Support image syntax with size
+* Update textcomplete rules to support more conditions
+* Update to use bigger user profile image
+* Support showing signin button only when needed
+
+### Fixes
+* Fix other clients' cursor might disappear or move out of bound
+* Fix to handle user profile image not exists
+* Fix potential toolbar layout glitch
+* Fix imgur uploads should always use https to avoid mix-content warning
+* Fix to change fullscreen key to avoid OS key conflicts
+* Fix and change ESC key in Vim mode
+
+ 0.4.1 2016-04-22 10:43
+---
+### Enhancements
+* Support when client domain not provided will use window.location variable
+* Support when domain not provided will use relative path
+* Support DOMAIN and URL_PATH environment variables
+
+
+ 0.4.0 `first-year` 2016-04-20 14:30
+---
+### Features
++ Support docs
++ Support Ionicons and Octicons
++ Support mermaid diagram
++ Support import and export with Gist
++ Support import and export with Google Drive
++ Support more options in YAML metadata
++ Support change keymap and indentation size/type
+
+### Enhancements
+* Change header anchor styles
+* Refactor server code and configs
+* Support experimental spell checking
+* Upgrade CodeMirror to 5.13.5
+* Update to emit info and disconnect clients if updater get errors
+* Support to indicate if the note status is created or updated
+* Support more DB types
+* Server now use ORM for DBs
+* Support static file cache
+* Support more ssl settings
+* Improve server stablilty
+* Improve server performance
+* Support Ionicons
+* Support container syntax and styles
+* Improve input performance
+* Change markdown engine from remarkable to markdown-it
+* Server now support set sub url path
+* Support textcomplete in multiple editing
+* Update to filter XSS on rendering
+* Update to make sync scroll lerp on last line
+* Update to make continue list in todo list default as unchecked
+* Support auto indent whole line in list or blockquote
+
+### Fixes
+* Fix status bar might be inserted before loaded
+* Fix mobile layout and focus issues
+* Fix editor layout and styles might not handle correctly
+* Fix all diagram rendering method and styles to avoid partial update gets wrong
+* Fix to ignore process image which already wrapped by link node
+* Fix when cut or patse scroll map might get wrong
+* Fix to handle more socket error and info status
+* Fix textcomplete not matching properly
+* Fix and refactor cursor tag and cursor menu
+* Fix Japanese, Chinese font styles
+* Fix minor bugs of UI and seletor syntaxes
+
+ 0.3.4 `techstars` 2016-01-19 00:22
+---
+### Features
++ Beta Support slide mode
++ Beta Support export to PDF
++ Support TOC syntax
++ Support embed slideshare and speakerdeck
++ Support Graphviz charts
++ Support YAML metadata
++ Support private permission
+
+### Enhancements
+* Support pin note in history
+* Support IE9 and above
+* Support specify and continue line number in code block
+* Changed all embed layout to 100% width
+* Added auto detect default mode
+* Support show last change note user
+* Upgrade CodeMirror to 5.10.1 with some manual patches
+* Improved server performance
+* Support autocomplete for code block languages of charts
+
+### Fixes
+* Fixed some server connection issues
+* Fixed several issues cause scrollMap incorrect
+* Fixed cursor animation should not apply on scroll
+* Fixed a possible bug in partial update
+* Fixed internal href should not link out
+* Fixed dropbox saver url not correct
+* Fixed mathjax might not parse properly
+* Fixed sequence diagram might render multiple times
+
+ 0.3.3 `moon-festival` 2015-09-27 14:00
+---
+### Features
++ Added status bar below editor
++ Added resizable grid in both mode
++ Added title reminder if have unread changes
++ Support todo list change in the view mode
++ Support export to HTML
++ Changed to a new theme, One Dark(modified version)
+
+### Enhancements
+* Support extra tags in todo list
+* Changed overall font styles
+* Optimized build sync scroll map, gain lots better performance
+* Support and improved print styles
+* Support to use CDN
+* Image and link will href to new tab ors window
+* Support auto scroll to corresponding position when change mode from view to edit
+* Minor UI/UX tweaks
+
+### Fixes
+* Change DB schema to support long title
+* Change editable permission icon to avoid misunderstanding
+* Fixed some issues in OT and reconnection
+* Fixed cursor menu and cursor tag are not calculate doc height properly
+* Fixed scroll top might not animate
+* Fixed scroll top not save and restore properly
+* Fixed history might not delete or clear properly
+* Fixed server might not clean client properly
+
+ 0.3.2 `typhoon` 2015-07-11 12:30
+---
+### Features
++ Support operational transformation
++ Support show other user selections
++ Support show user profile image if available
+
+### Enhancements
+* Updated editor to 5.4.0
+* Change UI share to publish to avoid misleading
+* Added random color in blockquote tag
+* Optimized image renderer, avoid duplicated rendering
+* Optimized building syncscroll map, make it faster
+* Optimized SEO on publish and edit note
+
+ 0.3.1 `clearsky` 2015-06-30 16:00
+---
+### Features
++ Added auto table of content
++ Added basic permission control
++ Added view count in share note
+
+### Enhancements
+* Toolbar now will hide in single view
+* History time now will auto update
+* Smooth scroll on anchor changed
+* Updated video style
+
+### Fixes
+* Note might not clear when all users disconnect
+* Blockquote tag not parsed properly
+* History style not correct
+
+ 0.3.0 `sunrise` 2015-06-15 24:00
+---
+### Enhancements
+* Used short url in share notes
+* Added upload image button on toolbar
+* Share notes are now SEO and mobile friendly
+* Updated code block style
+* Newline now will cause line breaks
+* Image now will link out
+* Used otk to avoid race condition
+* Used hash to avoid data inconsistency
+* Optimized server realtime script
+
+### Fixes
+* Composition input might lost or duplicated when other input involved
+* Note title might not save properly
+* Todo list not render properly
+
+ 0.2.9 `wildfire` 2015-05-30 14:00
+---
+### Features
++ Support text auto complete
++ Support cursor tag and random last name
++ Support online user list
++ Support show user info in blockquote
+
+### Enhancements
+* Added more code highlighting support
+* Added more continue list support
+* Adjust menu and history filter UI for better UX
+* Adjust sync scoll animte to gain performance
+* Change compression method of dynamic data
+* Optimized render script
+
+### Fixes
+* Access history fallback might get wrong
+* Sync scroll not accurate
+* Sync scroll reach bottom range too much
+* Detect login state change not accurate
+* Detect editor focus not accurate
+* Server not handle some editor events
+
+ 0.2.8 `flame` 2015-05-15 12:00
+---
+### Features
++ Support drag-n-drop(exclude firefox) and paste image inline
++ Support tags filter in history
++ Support sublime-like shortcut keys
+
+### Enhancements
+* Adjust index description
+* Adjust toolbar ui and view font
+* Remove scroll sync delay and gain accuracy
+
+### Fixes
+* Partial update in the front and the end might not render properly
+* Server not handle some editor events
+
+ 0.2.7 `fuel` 2015-05-03 12:00
+---
+### Features
++ Support facebook, twitter, github, dropbox login
++ Support own history
+
+### Enhancements
+* Adjust history ui
+* Upgrade realtime package
+* Upgrade editor package, now support composition input better
+
+### Fixes
+* Partial update might not render properly
+* Cursor focus might not at correct position
+
+ 0.2.6 `zippo` 2015-04-24 16:00
+---
+### Features
++ Support sync scroll
++ Support partial update
+
+### Enhancements
+* Added feedback ui
+* Adjust animations and delays
+* Adjust editor viewportMargin for performance
+* Adjust emit refresh event occasion
+* Added editor fallback fonts
+* Index page auto focus at history if valid
+
+### Fixes
+* Server might not disconnect client properly
+* Resume connection might restore wrong info
+
+ 0.2.5 `lightning` 2015-04-14 21:10
+---
+### Features
++ Support import from dropbox and clipboard
++ Support more code highlighting
++ Support mathjax, sequence diagram and flow chart
+
+### Enhancements
+* Adjust toolbar and layout style
+* Adjust mobile layout style
+* Adjust history layout style
+* Server using heartbeat to gain accuracy of online users
+
+### Fixes
+* Virtual keyboard might broken the navbar
+* Adjust editor viewportMargin for preloading content
+
+ 0.2.4 `flint` 2015-04-10 12:40
+---
+### Features
++ Support save to dropbox
++ Show other users' cursor with light color
+
+### Enhancements
+* Adjust toolbar layout style for future
+### Fixes
+* Title might not render properly
+* Code border style might not show properly
+* Server might not connect concurrent client properly
+
+ 0.2.3 `light` 2015-04-06 20:30
+---
+### Features
++ Support youtube, vimeo
++ Support gist
++ Added quick link in pretty
++ Added font-smoothing style
+
+### Enhancements
+* Change the rendering engine to remarkable
+* Adjust view, todo list layout style for UX
++ Added responsive layout check
++ Auto reload if client version mismatch
++ Keep history stack after reconnect if nothing changed
++ Added features page
+
+### Fixes
+* Closetags auto input might not have proper origin
+* Autofocus on editor only if it's on desktop
+* Prevent using real script and iframe tags
+* Sorting in history by time not percise
+
+ 0.2.2 `fire` 2015-03-27 21:10
+---
+### Features
++ Support smartLists, smartypants
++ Support line number on code block
++ Support tags and search or sort history
+
+### Enhancements
++ Added delay on socket change
++ Updated markdown-body width to match github style
++ Socket changes now won't add to editor's history
++ Reduce redundant server events
+
+### Fixes
+* Toolbar links might get wrong
+* Wrong action redirections
+
+ 0.2.1 `spark` 2015-03-17 13:40
+---
+
+### Features
++ Support github-like todo-list
++ Support emoji
+
+ ### Enhancements
++ Added more effects on transition
++ Reduced rendering delay
++ Auto close and match brackets
++ Auto close and match tags
++ Added code fold and fold gutters
++ Added continue listing of markdown
+
+ 0.2.0 `launch-day` 2015-03-14 20:20
+---
+### Features
+
++ Markdown editor
++ Preview html
++ Realtime collaborate
++ Cross-platformed
++ Recently used history
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