ARMORY-35: Implemented Base64 and Clear Text signatures..
ARMORY-45: Update Min fee constant from 50000 satoshis to 10000
ARMORY-35: Comments and make sure all caught exceptions are re-raised.
ARMORY-35: Update Version number 0.89.99.15
Merge branch 'testing' of github.com:etotheipi/BitcoinArmory into testing