improve I/O waiting using select
minor code clean up in IS class
improved and expanded logging in IS class
add underscore as valid char for message addresse

fixes #1
catch ValueError when decoding lat/lng for MicE

fixes #2
Merge branch 'dev', v0.6.29

0e05efe - catch ValueError when decoding lat/lng for MicE
0d80f20 - add underscore as valid char for message addresse
4b1dad5 - improved and expanded logging in IS class
cffc721 - minor code clean up in IS class
0026655 - improve I/O waiting using select