* Add syntax highlighting to markdown preview
* Include highlight styles
* disable markedhighlight for now
* fix proper importing for code syntax highlighting with css files and register all languages
* Add language examples for code syntax highlighting
* bump version and update readme.md
* update readme
- add code syntax highlight example
* update readme.md
* Using default languages for highlight.js
* Include all language support by default with option to specify/limit list
* clean up app.js execution
* implement tab indenting and deindenting
* refactor preview code into preview manager
* Add language to copy button and include language label to print preview as well
* Add lazy loading to markdown code styles
* update readme.md image
* Cache highlight languages and simplify variable in server.js
* fix tab indenting / deindenting and refactor all functions to declarations instead of arrow functions for hoisting
* collaborative editing fix for accurate representations between local and remote changes
* refactor undo and redo functionality to be session based per client per notepad
