Removed an incorrect warning
Merge pull request #96 from gem/remove-wrong-warning

Removed an incorrect warning
Fixed version in the documentation
Merge pull request #99 from gem/fixed-version

Fixed version in the documentation
Update changelog for 0.5.0 offical release
Add constraint on python-oq-hazardlib version dependency
Merge branch 'master' into improve-classical-workflow
Fixed all the risk tests