Minor bug fixes for base builds

param_derivitive and graident used the wrong parameters This is now fixed

To fix some pytest

More tests for cases where FeatureSpace should fail

Add exception tests

Bug Fix Classification

See merge request tpurcell/cpp_sisso!34

Multi-task where not all classes are defined in all classes now works

Match up with gitlab docs example

Add Code Coverage Tests

See merge request tpurcell/cpp_sisso!32

Fixes the bugs associated with that

Param tests only work if PARAMS is built

Subtract and less then 1e-10

If _model exists destroy/free it

mpi barriers not seeming to work alone

Rinitialization removed existing data leading to the problem

Must be from copying into the sorted matrix since model node tests work

Test in the docker now

Prevent global variables persisting across all tests

Not needed

Fix pythonpath problem

This should fix the issues

fix that compilation error

Also bug fixes associated with those changes

Add unit tests for:
Classification
Models

Fix Bugs in:
LossFunction: prop_project_std added for parameterization