added proxy for cosmological calculations
updated docs
add_model to Analysis
Update with changes from master
Merge docs into analysis
Merge branch 'master' into analysis
add observations class handler
fix typo
compute derivatives in Fisher analysis
added skeleton for full likelihood analysis
fixed gaussian_likelihood reference
pre debug fisher matrix
handle case in which covariances are diagonal
tested fisher with diagonal covariances
update docs
implemented and tested serial interpolation
reshape predicted features
split chi2 calculations in chunks
made _predict reusable
compute chi2 in chunks with map()