Release 2.38 and 3.01

[Marijn Haverbeke]

Hi all,

I've just tagged two new releases. 2.38 is a minor update from 2.37,
porting over a bunch of bugfixes and new modes from the master (3.x)
branch. 3.01 is more interesting:

- Move all add-ons into an organized directory structure under /addon.
You might have to adjust your paths.
- New modes: D, Sass, APL, SQL (configurable), and Asterisk.
- Several bugfixes in right-to-left text support.
- Add rtlMoveVisually option.
- Improvements to vim keymap.
- Add built-in (lightweight) overlay mode support.
- Support showIfHidden option for line widgets.
- Add simple Python hinter.
- Bring back the fixedGutter option.

The zip for 3.01 is at http://codemirror.net/codemirror-3.01.zip
A full list of the new patches is at
https://github.com/marijnh/CodeMirror/compare/v3.0...v3.01

Directly after tagging 3.01, I've landed all the split-view,
first-class document patches on the master branch of the repository.
They will be part of the next release, 3.1. I'd once again like to
invite people to start testing them. See the original announcement [1]
for more details.

[1]: https://groups.google.com/forum/?fromgroups=#!searchin/CodeMirror/3.1$20from:me/codemirror/WWcC_ZkzbsA/g3KHI90O9jUJ

Best,
Marijn