add  vim-multiple-cursors plugin.
Merge branch 'master' into testing/multiple-cursors
Merge branch 'master' into testing/multiple-cursors
cancel multiple-cursors, because it`s not work.
enabled vim-multiple-cursors.
modify vim-multiple-cursors mapping.
Merge branch 'master' into testing/multiple-cursors
add multiple-cursors
change order.
sort 'multiple-cursors' plugin.
Merge branch 'testing/multiple-cursors'
add gh, gH keymap for GitGutterNextHunk and GitGutterPrevHunk.