more natural ipa transcription of english panphone

Pronunciation of "again" is rarely with a palatal g, and usually with
a monophthong.  Instead include other non-phonemic realisations like
- common aspiration (frequent after initial voiceless stops),
- retraction (postalveolar variation before rhotic sound), and
- release (not audible for the first stop of a cluster).
Also replace one instance of /ʌ/ by allophone /ɐ/.