Support for vim-commentary/comment engines

Merge pull request #8 from robdimsdale/patch-1

Add version as step option

Merge pull request #7 from databus23/patch-1

fix plugin load guard

move g:concourse_flytags_bin check general ftplugin

move g:concourse_flytags_bin check to inside tagbar function

silence RainbowToggleOff

Optimize README gif

minor refactors on syntax code

allow dashes on yaml keys

improve yaml number regex

fix number highlighting

simplify syntax regex a bunch, fix params/config

highligh numbers