* plugin-based architecture
	* everything is a plugin, even "built-in" functionality
	* plugins can have dependencies on other plugins
	* plugins can be fetched/updated from the web
* everything that can do anything to the text buffer is an
  instance of the Command pattern
	* insert/delete/jump/etc.
	* this allows undo/redo to be implemented easily and efficiently
	* commands can be given arguments
	* commands can also be chained together into custom user-defined commands
* generic AST that plugs in to specific languages based off a per-language grammar
	* this allows features like autocomplete and jump-to-definition to be written once
	  and then used across multiple languages without needing to write specifically
 	  for any of those languages
	* maybe a separate AST would be needed for markup?
		* maybe not, if the generic one wasn't an AST proper as opposed to simply
		  a database of various tags and definitions
			* cross-file autocomplete (think import/#include statements) would
			  not work with this method (maybe?)