Merge pull request #220 from MLBazaar/release_v0.5.0

v0.5.0

Bump version: 0.4.0.dev0 → 0.4.0

Bump version: 0.3.12.dev1 → 0.3.12

Bump version: 0.3.11.dev0 → 0.3.11

Bump version: 0.3.10.dev0 → 0.3.10

Bump version: 0.3.9.dev1 → 0.3.9

Bump version: 0.3.8.dev0 → 0.3.8

Bump version: 0.3.7.dev0 → 0.3.7

Bump version: 0.3.6.dev2 → 0.3.6

Bump version: 0.3.5.dev0 → 0.3.5