Bump version to 0.7.28

Fixes jdorn#504 Closes jdorn#543

Bump version to 0.7.27

Closes jdorn#605

Version bump to 0.7.26

Version bump to 0.7.25

Version bump to 0.7.24

Closes jdorn#526 Closes jdorn#533 Closes jdorn#436 Fixes jdorn#388

Version bump to 0.7.23

Version bump to 0.7.22

Version bump to 0.7.21

Version bump to 0.7.20

Bump version to 0.7.19