Bump version to 1.5.6 [#119736173]

Signed-off-by: David Jahn <david.a.jahn@gmail.com>

Bump version to 1.5.5 [#115779555]

Bump version to 1.5.4

Signed-off-by: David Jahn <david.a.jahn@gmail.com>

Bump version to 1.5.3

Signed-off-by: Brandon Shroyer <bshroyer@pivotal.io>

Bump version to 1.5.2

Signed-off-by: David Morhovich <dmorhovich@pivotal.io>

Bump version to 1.5.1

Bump version to 1.5.0

Bump version to 1.4.0

Bump version to 1.3.5

Bump version to 1.3.4