Merge branch 'master' into develop
Merge branch 'develop' into feature/back-to-previous-window
Revert "After getting NERDTree window, switch back to the previous window"

This reverts commit f5a082b3ec8cabe81e74527a3ab4090b28b432c1.

According to the maintainer jistr@github.com, this puts focus into
empty file buffer instead of focusing NERDTree after startup, see
jistr/vim-nerdtree-tabs#36, revert for now.
Merge branch 'feature/back-to-previous-window' into develop
Format code, indentation and blank lines
[1/4] Rename function
[2/4] Rename function
[3/4] Rename function
[4/4] Rename function
[1/4] Rearrange code
[2/4] Rearrange code
[3/4] Rearrange code
[4/4] Rearrange code
Add fold marker
Small improvement
Merge branch 'feature/source-cleaning' into develop
Add augroup 'NERDTreeTabs' for autocmds
Merge branch 'feature/add-augroup' into develop
Merge branch 'develop'