Release 0.9.9

Release 0.9.0

Release 0.8.0

Release 0.7.1

Release 0.7.0

Merge pull request rsim#107 from rsim/release/0.6.0

Release 0.6.0

Release 0.5.3

Merge pull request rsim#70 from rsim/release-0.5.2

Release 0.5.2

Merge pull request rsim#67 from rsim/release-0.5.1

Release 0.5.1

described changes for version 0.5.0