Don't override antialiasing in markdown
:memo: Mark atom.commands experimental

The CommandRegistry class is still experimental and 404-ing in the
API docs on atom.io
Upgrade to language-todo@0.12
Merge pull request #3610 from postcasio/master

Don't override antialiasing in markdown
Upgrade to apm 0.97
Upgrade to bracket-matcher@0.59
Resolve buildDir before it is used in other join calls
Upgrade atom-keymap
Disable deprecations unless in dev/spec mode

These are currently adding ~200ms to startup so temporarily disable
until the grim performance is improved and/or core and bundled packages
are updated to not call deprecated APIs.
Prepare 0.132