v3.0.0-alpha.3

added

• displaying and setting the language from the command palette
• language button in the editor toolbar
• setting the editor indentation units and width (from toolbar and command palette)
• loading languages.yml from github
• getting all languages through the api (/api/v3/lang/all)
• caching the language list for up to a week
• specifying the language of pastes
• previewing syntax highlighting for languages not supported in the editor
• script for generating all the grammars from github
• viewing pastes now has syntax highlighting
• using the TomorrowMyst theme for syntax highlighting