Make autocompletion scopes

[eneerge]

Need to filter the autocompletes based on the current input. EG: If first character is $, then only show $identifiers. Otherwise default to show only /commands.

In the current form, when typing /command, $identifier may show up first due to Sublime not matching on $ or / when it's the first character. This makes the autocomplete hard to use.

[eneerge]

This post mentions changing scopes for autocompletions.
https://stackoverflow.com/questions/26049019/disable-code-completion-inside-quotes-in-sublime-text-3