Merge pull request #646 from caktus/develop

v0.8.1
Merge pull request #650 from caktus/develop

v0.8.2
Version bump to 0.8.2
Refs #587: ProjectHours hours must be positive

Branch: bug/587-positive-projecthours
Merge pull request #587 from caktus/bug/587-positive-projecthours

Require ProjectHours.hours > 0