update to version v0.19.11

Update version v0.19.10

version update

Update version.py

Merge pull request Consensys#724 from ConsenSys/develop

Update version.py

Update version.py

Bump version number

Update version.py

Version bumped to 0.19.0

Merge pull request Consensys#610 from ConsenSys/norhh-patch-2

v0.18.13