Set warnings for truncated hessian, it has been noted that that by
truncating we can have incorrect posteriors, though at convergence
this should not be a problem, could be fixed by not using Cholsky
as the decomposition as it cannot handle non-positive definite mats
Fixed lots of breaking tests, reduced step size for checkgrad to 1e-4 in tests (perhaps this should be global), added some missing attributes to data_resources.json
Fixed the numerical quadrature, won't work with large f unless normalized
Merge branch 'devel' of github.com:SheffieldML/GPy into devel
Bug in ODE_UY fix
Merged and fixed conflict in ODE_UY.py