Feature/drop method for comparers and collections

[ryan-kipawa]

Closes #451

[ecomodeller]

@ryan-kipawa is there anything else to add or is this done?

[ryan-kipawa]

@ryan-kipawa is there anything else to add or is this done?

Still need to add drop for collections before closing it 😄

[ecomodeller]

Seems like we invented this twice #515 🙈