Add a red-black tree with configurable $Key and $Value.
Also includes tests that verify it maintains RB invariants, doesn't leak.
Originally based on the CC0 implementation from literateprograms.org.
But reworked to the same API used by @Yawning's excellent `core:container/avl` for ease of use.
I verified the PR by running the entire test suite of Odin itself with
`-sanitize:address` and also the ols test suite (which caused unique problems
before).
A test has also been added with some problematic code, Windows seems to
have problems with asan in CI or in general so it is not ran there.
The LB_ABI_COMPUTE_RETURN_TYPES block has been removed entirely because
it was unused, I got pretty confused why it didn't effect anything at
first.
Fixes#3211
A new package `core:time/datetime` has been added which can represent moments much further in the past and future than `core:time`.
It is based on *the* reference work on the subject, Calendrical Calculations Ultimate Edition, Reingold & Dershowitz.
More procedures will be added to it in the future, to for example calculate the 3rd Thursday in March to figure out holidays.
The package has been tested for more than a year and can handle dates 25 quadrillion years into the past and future with 64-bit day ordinals, or 5 million with 32-bit ones.
This also fixes a longstanding bug where converting between YYYY-MM:DD hh:mm:ss and `time.Time` and back could result in a mismatch.
RFC 3339 timestamps can now also be parsed using the `core:time` package.
This is infrequently maintained, and has been a strict subset of what is
available in `core:crypto` for a while. Instead of improving the
bindings, it is better to spend resources improving `core:crypto`.
