update changelog

Revise ISO parser, add common formats (#20)

* prep common formats

* update readme

* draft new iso parser

* add modifier for a, A, b, B directives, add j directive

* update changelog

update changelog

cleanup

remove tzdb generator script; db should not be generated if library i…

…s used as such

to v0.2.2 / tzdata 2024b

high voltage

to v0.2.0 - cross-compilation

code gen must run on host

to v0.1.6