Squashed 'vim/bundle/coffee-script/' changes from fd09aea..eb81ecc

eb81ecc Don't throw error if variable can't be unlet (#151)
2c15a42 Highlight Infinity and NaN as numbers (#148)
2f618aa Merge pull request #150 from hinrik/dont_change_isident
d31bcf4 Don't change 'isident'

git-subtree-dir: vim/bundle/coffee-script
git-subtree-split: eb81ecc1eee61368f0839567dd343263c5854f42
Merge commit '32a3fbac545426e49dacb6ea2202e88d1d866e1b'
Squashed 'vim/bundle/fugitive/' changes from 050b22e..34e2d25

34e2d25 Work around new status style in 1.8.5
dc250fc Add ability to query current Git version

git-subtree-dir: vim/bundle/fugitive
git-subtree-split: 34e2d2538a634a0a820a56994333ffa1fec1bc58
Merge commit 'f50efc3f93afcd1a71201cefbc9778dcdcb5300a'
Some changes
Squashed 'vim/bundle/airline/' content from commit 2539745

git-subtree-dir: vim/bundle/airline
git-subtree-split: 253974506a49c47758e414c7fa4aceffd47c20e7
Merge commit '71e22aead6471351f27c0f4a35ad53fd922619f3' as 'vim/bundle/airline'