Remove extra argument to dispatch#compile_command

The third argument to `dispatch#compile_command` was causing a "Too many
arguments for function" error. I'm not sure how this snuck in, as AFAICT
the signature of compile_command has been constant since
tpope/vim-dispatch@ef6ac42.
Bug fixes and tweaks on top of 0.4.0
Update buffer checks and dropped ctags options.
Bumped to version 0.4.1
Merge branch 'release/0.4.1'

* release/0.4.1:
  Bumped to version 0.4.1
  Update buffer checks and dropped ctags options.
  Bug fixes and tweaks on top of 0.4.0
Merge remote-tracking branch 'gadomski/dispatch-compile-command-arg-count' into release/0.4.1

* gadomski/dispatch-compile-command-arg-count:
  Remove extra argument to dispatch#compile_command

Conflicts:
	autoload/cmake/util.vim
Merge branch 'release/0.4.1'

* release/0.4.1:
  Remove extra argument to dispatch#compile_command