Fixing tex configuration: Removing obsolete iab commands and adding new ones, setting makeprg, setting spell check
improving tex snippets
Adding a few additional plugins and configuring some of them (tpope/vim-surround, tpope/vim-rails, benmills/vimux, sjl/gundo.vim)
Improving xxkb configuration
Making rspec run easier for ruby on rails projects
Adding vim-sparkup plugin
Making spell errors more visible, especially on the current line
Making swap files to be written in the tmp dir to reduce disk writes (experimental change)
Making swith between paste and no paste mode easier