Create autoUpdateManager in AtomApplication constructor

1.15.0

Merge pull request atom#13887 from atom/as-ignore-key-ref-on-text-editor

Ignore `ref` and `key` props in `TextEditor.prototype.update`

Merge pull request atom#13887 from atom/as-ignore-key-ref-on-text-editor

Ignore `ref` and `key` props in `TextEditor.prototype.update`

Merge pull request atom#13820 from atom/mb-ns-long-lines

Avoid hangs when opening minified files

⬆️ text-buffer

Merge pull request atom#13817 from atom/ns-dont-decorate-destroyed-la…

…yers

Throw exceptions when decorating destroyed marker layers

Merge pull request atom#13817 from atom/ns-dont-decorate-destroyed-la…

…yers

Throw exceptions when decorating destroyed marker layers

⬆️ text-buffer

Fixes atom/find-and-replace#854

⬆️ text-buffer

Fixes atom/find-and-replace#854