Fix value of angular width parameter on VESUVIO. Refs #7199
Add logging to ComptonProfile. Refs #7199
Allow the absolute error to be specified in SimplexMinimizer.

Refs #7199
Refactor ComptonProfile to calculate resolution & Y-space once.

Refs #7199
ComptonProfile functions can now populate a constraint matrix

This can be used by a composite of the functions to compute the
mass profile for various parameters.
Refs #7199
Significant caching in GramCharlierComptonProfile.

Leads to a roughly 400% speed increase (of the system test) as it currently
is. The Voigt function was expensive to compute and identical with each
function iteration. It is now cached when the workspace is set.
Refs #7199
Refactor GramCharlierComptonProfile to allow calculation of

each contribution separately. Refs #7199
Pass errors through to fill constraint matrix in ComptonProfile.

Refs #7199
Added class to perform least-square minimzation on eqn set.

It uses the same implementation that scipy uses for slsqp.
Refs #7199
Fix doxygen comment. Refs #7199
Remove dead-time correction from Vesuvio loader

Refs #7199
Output a non-histogram workspace from LoadVesuvio in difference mode

Refs #7199
Fix error calculation in LoadVesuvio. Refs #7199

The errors should have be computed from the data itself and not the
errors computed by LoadRaw. There was also a bug with how the tof values
were calculated.
Fix intensity parameters in ComptonScatteringCountRate

This allows them to be computed based on the current profile
values and taken out of the main fit. Refs #7199
Allow custom delimiter when reading/writing matrices from streams.

The stream operators still use commas as before but the free functions
now allows users to specify the delimiter. Refs #7199
Add intensity constraint matrix as attr on ComptonScatteringCountRate

Refs #7199
Include FSE parameter in intensity coeffs when free. Refs #7199
Check fixing of FSE coefficient in the correct place. Refs #7199
Add tests for concrete ComptonProfile result values. Refs #7199

Also includes a separate test helper method to create a similar workspace
for the tests to use as they share a large amount of setup
Add test for ComptonScatteringCountRate values. Refs #7199