Bump version to v0.1.4

Bump version to v0.1.3

Merge pull request pfnet-research#30 from dtaniwaki/v0.1.2

Bump version to v0.1.2

Merge pull request pfnet-research#23 from dtaniwaki/release-v0.1.1

Release v0.1.1

Merge pull request pfnet-research#18 from pfnet-research/set-dummy-us…

…er-for-pull

Set dummy user if not available

Merge pull request pfnet-research#63 from Cluster/release-v0.1.0

Bump version to 0.1.0