release v2.3.1

More supported block lists (uBlock Unbreak & Privacy, etc.)
Content-script injection into dynamically-created iFrames
Critical fix to checksum errors for adnauseam.txt
Correct impl. of incognito/private-browsing
New set of preferences (click, hide, block)
Correct incoming/outgoing headers
Fix to duplicate ads in menu
Fix to text-ad handling for Ask
New first-run page on installation
Added uBlock version to menu
UI and locale improvements in AdVault
Several minor fixes and regression bugs
Built on uBlock (v1.7.6)