v0.15.0

Added

• Added interactive code completions for TypeScript files
  (#243).

  Completions can be disabled by setting the no-completions attribute on
  <playground-ide>, <playground-file-editor>, or <playground-code-editor>
  components.

• Added Ctrl-Space hotkey for triggering interactive code completions.

• Added documentKey property to <playground-code-editor> which is
  used to keep track of individual CodeMirror document instances internally.
  Default behavior without setting a documentKey is unchanged.

  Use documentKey for fine control over the CodeMirror document instance. For
  example, to model changing a file.

Fixed

• Normalize content-type response header to lowercase when matching filetypes.

• Fixed undo history applying across files
  (#154).

  Previously all files shared the same document instance resulting in files
  sharing undo/redo history. Now each file has its own isolated internal
  document instance.

• Fixed only a single closing script tag unescaping in html files using
  playground-ide
  (#251).