Merge pull request #453 from pepkit/dev

Release 0.15.8

Merge pull request #451 from pepkit/dev

Release 0.15.7

Merge pull request #448 from pepkit/dev

Release 0.15.6

Merge pull request #447 from pepkit/dev

Release 0.15.5

Merge pull request #446 from pepkit/dev

Release 0.15.4

Merge pull request #431 from pepkit/dev

Release 0.15.3

Merge pull request #427 from pepkit/dev

Release 0.15.2

Merge pull request #426 from pepkit/dev

Release 0.15.1

Merge pull request #425 from pepkit/dev

Release 0.15.0

updated version