It seems the change you made in commit aca6297 was overwritten on 8bca30b and now g:nerdtree_tabs_open_on_gui_startup is 0 again, disabling NERDTree Tabs by default.
Was this on purpose? I liked that feature :)
Yeah it was on purpose but you can override it by placing a different value in your ~/.vimrc.after :)
I found more and more that NERDTree gets in the way because i'm always closing it to get more real estate. I rely much more on ctrlp to open files and nerdtree on occasion.
I see, seems reasonable. You might want to consider adding some note on that in the Readme.
There is a section in the readme :) https://github.com/skwp/dotfiles#overriding-vim-settings
Yeah, I meant specifically about enabling the NERDTree Tabs plugin.
[Fix #110] Add documentation for perl