v2.2.0

Octofitter v2.2.0

Diff since v2.1.0

• Add helpers for using the theta parameter published in the octofitter paper
• Improve the corner plot output to always show the actual variable names, not just English descriptions. This can be overridden by passing a labels dict.
• Speed up initial pathfinder solve (first phase of octofit) by reducing optimizer relative tolerance to 1e-10
• Improve compile times for each new model fit with octofit_pigeons slightly