Merge pull request argotorg#469 from chriseth/version

Set version to 0.3.1.

Merge pull request argotorg#429 from chriseth/keywords

Breaking changes for version 0.3.0

Merge pull request argotorg#398 from chriseth/version

Update version to 0.2.2

Merge pull request argotorg#378 from chriseth/version

Increment version to 0.2.1

Merge pull request argotorg#265 from chriseth/version

Increment version to 0.2.0 (includes breaking changes).

Merge pull request argotorg#221 from chriseth/version

Increment version to 0.1.7

Merge pull request argotorg#146 from chriseth/version

Increment version to 0.1.6

Merge pull request argotorg#124 from chriseth/version

Set version to 0.1.5.

Version 0.1.4

Merge pull request argotorg#88 from chriseth/versionBump

Version 0.1.3.