YOu no longer have to prefix all functions in a plugin with the plugin
name (linter_onSave). This will now be done automatically using lua's
setfenv. When passing a function as a callback to a editor function,
make sure to prefix the plugin name (linter.onExit, or go.goimports) so
that micro knows which plugin to call the function from.
Plugins can now create their own commands using the `MakeCommand`
function. Plugins can also now create their own keybindings with the
`BindKey` function. See the go plugin for an example of `MakeCommand`.
This commit puts in place the ability for multiple views (splits).
This commit also removes the editor bindings so that all bindings can be
rebound by the user.
I also added some more comments
This fixes#109
