Upgrade to language-css@0.20
Upgrade to tree-view@0.129
Call dispose not off
Use disposables for keymap and menu deactivation
Do not access space-pen view when no elements
Upgrade find and replace
Merge pull request #3735 from atom/ns-text-editor-custom-element

Convert text editor to custom element
Clone menu items before merging them in in menu-helpers
Use ‘atom-pane’ custom tag name for PaneElement
Use ‘atom-pane-axis’ custom tag name for PaneAxisElement
Use ‘atom-pane-container’ custom tag name for PaneContainerElement
Use ‘atom-workspace’ custom tag name for WorkspaceElement
Use ‘atom-workspace-axis’ custom tag name instead of ‘div’
Use ‘atom-text-editor’ custom tag name for TextEditorElement
Make atom-workspace tag have ‘display: block’ style