Add listSubscriptions method to API
Add listSubscriptions method to API

Atheros1/PyBitmessage,bmng-dev/PyBitmessage,domob1812/PyBitmessage,debguy0x/PyBitmessage,JosephGoulden/PyBitmessageF2F,hb9kns/PyBitmessage,hb9kns/PyBitmessage,bmng-dev/PyBitmessage,debguy0x/PyBitmessage,hb9kns/PyBitmessage,timothyparez/PyBitmessage,lightrabbit/PyBitmessage,mailchuck/PyBitmessage,debguy0x/PyBitmessage,bmng-dev/PyBitmessage,xeddmc/PyBitmessage,xeddmc/PyBitmessage,krytarowski/PyBitmessage,tigerbunny/bitmessage,torifier/PyBitmessage,lightrabbit/PyBitmessage,torifier/PyBitmessage,mailchuck/PyBitmessage,timothyparez/PyBitmessage,gnu3ra/PyBitmessage,domob1812/PyBitmessage,kyucrane/PyBitmessage,tigerbunny/bitmessage,JosephGoulden/PyBitmessageF2F,torifier/PyBitmessage,metamarcdw/PyBitmessage-I2P,Atheros1/PyBitmessage,krytarowski/PyBitmessage,timothyparez/PyBitmessage,lightrabbit/PyBitmessage,Erkan-Yilmaz/PyBitmessage,Erkan-Yilmaz/PyBitmessage,mailchuck/PyBitmessage,kyucrane/PyBitmessage,tigerbunny/bitmessage,gnu3ra/PyBitmessage,timothyparez/PyBitmessage,debguy0x/PyBitmessage,rzr/PyBitmessage,domob1812/PyBitmessage,torifier/PyBitmessage,rzr/PyBitmessage,Atheros1/PyBitmessage,metamarcdw/PyBitmessage-I2P,Atheros1/PyBitmessage,mailchuck/PyBitmessage,hb9kns/PyBitmessage,lightrabbit/PyBitmessage