Merge pull request #100 from docker/prepare-v0.6.0

Prepare for the v0.6.0 release

Merge pull request #96 from docker/prepare-v0.5.0

Prepare for the v0.5.0 release

Merge pull request #92 from docker/prepare-v0.4.10

Prepare for the v0.4.10 release

Merge pull request #85 from docker/prepare-v0.4.9

Prepare for the v0.4.9 release

Merge pull request #81 from docker/prepare-v0.4.8

Prepare for the v0.4.8 release

Merge pull request #78 from docker/prepare-v0.4.7

Prepare for the v0.4.7 release

Merge pull request #73 from docker/prepare-v0.4.6

Prepare for the v0.4.6 release

Merge pull request #68 from docker/prepare-v0.4.5

Prepare for the v0.4.5 release

Merge pull request #67 from docker/prepare-v0.4.4

Prepare for the v0.4.4 release

Merge pull request #66 from docker/prepare-v0.4.3

Prepare for the v0.4.3 release