Improve Related.vim & change Ack mappings
Squashed 'bundle/summerfruit256/' content from commit 5bc3cda

git-subtree-dir: bundle/summerfruit256
git-subtree-split: 5bc3cdab46c03e5db8f9a3dcb304b5ed015feea4
Merge commit '671be3bdbddf71103a54af1678caf06788e887c7' as 'bundle/summerfruit256'
Move related.vim away
Squashed 'bundle/vim-bundler/' content from commit 1c6f471

git-subtree-dir: bundle/vim-bundler
git-subtree-split: 1c6f4716bedee690a5d0b283d4b6195b0da7d07d
Merge commit '8d7ec3a71c18d3c1dd1f001bc46cb9be46d0af7a' as 'bundle/vim-bundler'
Squashed 'bundle/vim-yardoc/' content from commit 19aac9b

git-subtree-dir: bundle/vim-yardoc
git-subtree-split: 19aac9b506eeaa919aefd0a0099aafb1ef2edce2
Merge commit '9aa85a0ebac0d7f0cb30579c4ce647b7ae28b170' as 'bundle/vim-yardoc'
Custom YARD highlights