build: bump version to 0.5.0

bump version to 0.4.2

bump version to 0.4.1

all: major 0.4.0 commit

A number of changes made:
- switching to float internally (should be faster & more accurate)
- deduplicated some code
- API/ABI break as usual
- bump version to 0.4

windows-cross.ini: add windres compiler

meson.build: go back to minsize

fix return code w/r/t --help

remove extraneous stdio includes

variable size HF Mult