raymondEhlers/reactionPlaneFit: Reaction Plane Fit 2.0

Note the API changes introduced by moving the fit results to the components!

• Store errors on fit parameters. See: fbb9bd36cf7f4b010377cb1c1d27cb5d09ccf57d.
• Evaluate the background function of a component. For a background fit component, this is the same as the fit function, while for a signal fit component, this will describe only the background contributions. See: 8836a38cbdb44f6db1508a23f295ff4872433938.
• Preliminary instructions on running the fit via c++. They are not yet tested. See: 8f6d57ca160e9500b4fa5c2747faa9e4b23c5a12.

• Moved component fit results into the fit components. See: a08c42a483d51ba5c599986ae8f5cdec6a4505f0 and 51ef75007d2a765bd03bf01958517d3109140067.
• Moved fit evaluation into the fit component. This was enabled by moving the fit results into the fit components. See: e3c13956b80ad31b7232f46fe0784b0179462175.
• Moved FitType to the base module so that it is more easily accessible. See: f3513c9f3d01d51c46e6b776fad005c32864001d.
• Moved error calculation to fit component. See: 674c8cf0f3bff1ebe95a8d5b76a7c2917d3169b7.
• Refactor error calculation to allow it to calculate errors for both the fit and background functions (or any other function). See: 674c8cf0f3bff1ebe95a8d5b76a7c2917d3169b7.
• Improved example plot styling. See: eb9fe16bd19e1e0106a822ee7e6a31f8a9be7e51 (included with a few other minor changes).
• Determine and plot errors on residual. See: 74b7f14b34b37b3563dcebc1031730a9343b5252.
• Large improvements to typing information and documentation in a variety of commits.

• Background fit example legend placement was accidentally moved. See: 1869eb0650c9b26157c6fed103e80e5ad78f7f08.
• Baseline test images, which started failing after a number of small aesthetic changes. See: 795d9d228a5cde6d5477dfd1c697efcabec7547c and 33f9dd83f5918ba5f5eabd86b78759df1197a9ac.
• Failing tests due to floating point variations in calculating parameter errors. The comparison tolerances had to be loosened. See: e668599966df447e99de7c145ad6c97ce7d2d814 and f2729a4c5ed517b25fd99019f71ccabf65bd2ac5.
• Indicate that the package is typed. The typing information is already there - it just didn't know it propagate it when running mypy on other packages. See: b113e40be09705fdc3f4cce1a6ea7bbcaa14442a.
• Updated call to the old pachyderm.Histogram1D API. See: f23f31473b77203e3c2d5cf9d2617c4f3f53a6db.

• evaluate_fit_component(...) from the ReactionPlaneFit object. It is unnecessary given the API changes. See 5e2048eb1bace3d34dd428aea79b7ca002e61156.