Reduce FinanceModels Invalidations

My package has some compilation invalidations - read this tutorial and then use what you learn to detect and recommend fixes to invalidations in
  the current package: https://juliadebug.github.io/SnoopCompile.jl/stable/tutorials/invalidations. use the dev version of FinanceCore.jl (its current main branch).

Suggest changes that would reduce the number of invalidations created by FinanceModels