`zb` is usually bound to `evil-scroll-line-to-bottom`.
By moving `outline-hide-entry` to `zE`, you also get more consistency
because `ze` is bound to `outline-show-entry`.
Move setup files into subdirectories. Move mode directories to modes subdir.
This will make it easy to specify a recipe in melpa that maintains the directory
structure. Add interactive functions to jump to .el and README files
See #170