vim mode: Add tests covering word selection behavior.
vim mode: Fix off-by-one errors in word selection.

The below conforms to Vim's behavior regarding whitespace trimming.
Add CodeMirror Eclipse to real-world uses
CodeMirror should set spellcheck=false on the input textarea

WebKit does not honor autocorrect=off, but it does honor
spellcheck=false.
[javascript mode] Fix bug in handling of expressions without commas

Closes #1501
Don't call alignHorizontally before display update

Closes #1498
[sass mode] Support double-colon pseudo elements

Closes #1461
[smalltalk mode] add support for '$<...>' character syntax
[smalltalk mode] remove unused variable
[smalltalk mode] comma is special character
[smalltalk mode] disallow brackets in symbol literal
[vim keymap] Add Ctrl-o/Ctrl-i jumplist motions