Merge pull request ethereumjs#106 from ethereumjs/new-release-v400

New release v4.0.0

Merge pull request ethereumjs#89 from ethereumjs/new-release-v340

New release v3.4.0

Merge pull request ethereumjs#84 from ethereumjs/new-release-v333

New release v3.3.3

Merge pull request ethereumjs#82 from ethereumjs/new-release-v332

New release v3.3.2

Merge pull request ethereumjs#74 from ethereumjs/new-release-v331

New release v3.3.1

Merge pull request ethereumjs#72 from ethereumjs/new-release-v330

New release v3.3.0 (Constantinople support for validation)

Merge pull request ethereumjs#65 from ethereumjs/new-release-v321

New release v3.2.1

Merge pull request ethereumjs#62 from ethereumjs/new-release-v320

New release v3.2.0

Merge pull request ethereumjs#53 from ethereumjs/new-release-v310

New release v3.1.0

Merge pull request ethereumjs#50 from ethereumjs/new-release-v300

New release v3.0.0