Bump version

Bump version to 0.13.1

Bump version to 0.13

Prepare 0.12 release

Update Jackson to 2.8.5

Prepare 0.11 release

Merge pull request finagle#654 from finagle/vk/prepare-0.11-M4

Prepare the 0.11-M4 release

Merge pull request finagle#634 from finagle/vk/prepare-m3

Prepare 0.11-M3

Merge pull request finagle#617 from finagle/vk/prepare-m2

Prepare M2 release

Merge pull request finagle#611 from finagle/prepare-0.11-M1

Prepare 0.11-M1 release