Fix rake upgrade with failed submodule
Update compton.conf: shadow-exclude and menu-opacity
vim: add matchparen.vim from Vim runtime
vimrc: fix My_CR_map/My_BS_map (use len() to detect <Plug> maps)
Update submodule oh-my-zsh fa48b05...54b4164

* oh-my-zsh fa48b05...54b4164 (1):
  > git: add aliases: gfa, grv; improve glp