multiple cursor mappings in evil visual state.

Be careful using this - quite tempremental with evil.
Keep windows balanced when splitting horizontally.
python-pylint package - pylint errors visitable.
Added leader save shortcut key to evil.
Added smart-operator plugin.
Added smart window package.
Added mappings for evil-nerd-commenter.
Use define-prefix-command for evilnc mappings.

Previously defined a variable to a keymap and used that.