v0.11.1

Thermochron v0.11.1

Diff since v0.11.0

• Add empiricaluncertainty! function
• Add Plots extension
• Update simulated annealing approach, using σmodel as default calculated uncertainty
• Add dynamicsigma option to freely resample model uncertainties for each chronometer
• Switch to more traditional version of equivalent time approach
• Make annealing models @kwdef structs, update Ketcham 1999 coeffs
• Various internal updates