Merge pull request #460 from raysect/development

Release v0.9.1

Merge pull request #454 from raysect/development

Added missing dependencies to v0.9.0

Merge branch 'development'

Merge pull request #405 from raysect/development

Release v0.8.0

Merge pull request #396 from raysect/development

Release 0.7.1

Merge pull request #369 from raysect/development

Hotfix before release 0.7.0

Merge pull request #344 from raysect/development

Release 0.6.1

Merge pull request #322 from raysect/development

Release v0.6.0

Merge pull request #288 from raysect/development

Release v0.5.6

Merge pull request #266 from raysect/development

Made cython a dependency and removed c files from the distribution.