Merge pull request #12 from ticosax/master

useless since we don not pin any versions
Force usage of main loop
Forgot to decorate
simplify
useless
Add support for async-rpcs

Use better futures than before
reuse same socket as it can connect to several endpoint
log ghost exception as they might not be raised to main thread.
update changelog
ease debugging
Merge pull request #13 from ticosax/async-rpc

Async rpc