Reset state when a transition fails
Update after each transition instead of at the end.

Updating the state /after/ the entire transition creates invalid
receipts.
Added missing types
Method for checking contract addresses
Fixed call
Removed log
Length check on get
Renamed snapshot to copy/set and added it back to the VM
Changed copy/set
Removed some logging
Returned to single method
bump
Merge branch 'release/0.5.14' into develop
CALLDATACOPY
Changed loggers
Moved 0 check to state object for now
Append zero's in R & S
Support serpent lang
Clean up & refactored methods
Make sure that public key always uses 64 bytes