Better handling of printing floats

[jakewilliami]

Everything handling floats seems very slow and hacky, trying to bypass how floats are actually stored and putting them into strings, splitting those strings, etc. I think this might be refined, but I am not sure how.

[jakewilliami]

I believe we also have the restriction of printing to Dec64, but no more precision than that..

[jakewilliami]

Count consider using Base.hidigit? Maybe there are some other internal methods that could come in handy

[jakewilliami]

Could also consider using something from Ryu