The VulnerabilityFunction is no more callable
Added a .taxonomy attribute to the riskmodel
Merge branch 'fix-risk-seeds' of https://github.com/gem/oq-risklib into fix-risk-seeds
API changes needed for the getter-builder branch
Change of API in the hazard getters
Now the workflows depend on the full set on vulnerability functions
Merge branch 'getter-builder' of github.com:gem/oq-risklib into getter-builder
Moved Damage class from calculators to workflows
PEP8 fix
Now .imt is a required attribute of a VulnerabilityFunction
The attribute vulnerability_function.imt can now be pickled
Added a few small consistency checks
Added a special case for zero correlation in make_epsilons
Simplied the RiskModel API and added docstrings
Improved a docstring
Merge pull request #67 from gem/getter-builder

Refactoring of risklib needed to solve the problem of the block size dependence