Merge pull request ethereum#4316 from ethereum/dev

Release v1.6.0-alpha.0

Merge pull request ethereum#4298 from ethereum/dev

Release v1.5.0

Bump version to v1.5.0-beta.5 (ethereum#4260)

Merge pull request ethereum#4235 from ethereum/dev

Release v1.5.0-beta.4

Merge pull request ethereum#4163 from ethereum/dev

Release v1.5.0-beta.3

Merge pull request ethereum#4119 from ethereum/dev

Release v1.5.0-beta.2

Merge pull request ethereum#4097 from ethereum/dev

Release v1.5.0-beta.1

Merge pull request ethereum#4078 from ethereum/dev

Release v1.5.0-beta.0

Merge pull request ethereum#4036 from ethereum/dev

Release v1.5.0-alpha.10

Merge pull request ethereum#3982 from ethereum/dev

Release v1.5.0-alpha.9