New Tab Homepage 0.5.3

Mark as compatible with multi-process Firefox (aka "electrolysis" or "e10s").

New Tab Homepage 0.5.2

Firefox 44 compatibility.

New Tab Homepage 0.5.0

Rewritten as an SDK-based add-on in preparation for the gradual decline of support for XUL-based add-ons.

New Tab Homepage 0.4.3

• Firefox 4.0 compatibility
• Reverted focus code to work as per 0.4.1 based on feedback.