* Don't auto-subscribe for contracts #3240
* Smarter Balance : don't re-instantiate contracts, fetch tokens #3240
* Smarter Balance Tokens fetching (update image when needed) #3240
* Attaching to TokenReg Events instead of fetching for each block #3240
* Unsubscribe from shapeshit... #3240
* Unsubscribe from EthFilter if used once (resolved) #3240
* Remove warning
* PR review fix
* Typo
* Better contract JS API : one subscribe for all #3546
* Fixed test
33dd49160f