Implement Simple Push API
Add license
Include Marketplace in update zip
[WM] Handle 404 app icons
Support .xhtml extension
XMLHttpRequest: download index.html for directories

Towards compatibility with Notebook
Return null for undefined keys in localStorage.getItem

For compatibility with "Split the molecules"
Fix history.back/forward after history.pushState

For compatibility with "Split the molecules"
Create history entry on set location.hash

For compatibility with Notebook
XMLHttpRequest: prepare responses to .html requests

Towards compatibility with Notebook
Properly resolve absolute URLs in compat

Towards compatibility with Serene Notes
Support request.responseType = 'arraybuffer'

Towards compatibility with Flappy Bird