v3.4.1
Fixed typos in USE_SCRIPTS list of ISO script tags for USE-enabled scripts: Bhaiksuki -> "Bhks" (not "Nhks"), N'ko -> "Nkoo" (not "Nko ").
They should now get 'dist' feature instead of 'kern', and 'abvm' and
'blwm' instead of 'mark', like the other USE_SCRIPTS (#896).