[lint addon] Wrap long lint messages

e.g. errors on css `input.someLongClassName {}`
Add handleEx() to Vim mode's API

Provide an alternative (programmatic) way to run Ex commands.
Document a few more addons

Issue #1894
Improve mode writing docs a little, document line- and line-background- tokens
Work around poor italic support for webfont
[continuelist addon] Should continue list even after special chars (space, !, etc)
Mark release 3.19.0
Bump version number post-3.19
[manual] Mention using content form textarea in fromTextArea docs
Allow marked ranges that are inclusive on boths sides to be zero-length
[tern demo] Include polyfill script for IE7/8
[julia mode] Add
[julia mode] Simplify regexps, fix lint errors

Issue #1897
[julia mode] Integrate
[julia mode] small tweaks

Closes #1899
[julia mode] add single-precision literals
[julia mode] add triple-quote strings and exception-handling support
Fix lint errors

Issue #1900
Always move cursor to end of indent even if whitespace didn't change
[julia mode] added additional operators and fixed 'in' keyword