opimd: unified api for sent/received

[arne anka]

> I didn't notice your message until I did a web search on opimd zhone.  
> Did you
> publish your path?

no, i didn't.
due to some stability issues with zhone/fso (after some restarts zhone was  
unable to connect to gsm unless restartting frameworkd, and after a while  
not even then but only after a full reboot) i shelved it, since i had more  
pressing issues in real life (examns) and afterwards holidays w/o inet.

it was meant mostly to get my fingers warm with opimd with the added  
benefit of zhone being able to use it, never really meant to be _fully_  
functional.
since the fso debian packages have made some progress the last weeks  
(didn't test yet), maybe phoneutils now works stable, making  
shr-[dialer|messages] usable. if so, zhone will not need to be updated to  
opimd -- for me, that is.