Merge branch 'tagbar-toggle' into develop
Merge branch 'indent-bugfix' into develop
Added some kemaps for window navigation

- ctrl+[h, j, k, l] move across windows
- horizontally split windows are minimized when switching focus
- main file now has focus even when opening NERDTree by default
- Tagbar no longer closes when opening a split of two files containing
  code
Merge branch 'vim-windows'