~vladh/hare-pipewire

Fix "Can't have pointer to zero-sized type" errors

by replacing void with opaque where needed.

Signed-off-by: Johannes Maibaum <jmaibaum@gmail.com>
add contributing section
Use io::read instead of loop

also replaces unknown constant with types::I16_MAX

Signed-off-by: Autumn! <autumnull@posteo.net>
update Makefile

- add source dependency for bin/sine
- remove podtest

Signed-off-by: Autumn! <autumnull@posteo.net>
Replace char and strtoc with types::c

Signed-off-by: Autumn! <autumnull@posteo.net>
move podtest to hare-spapod
move spapod into hare-spapod
add enough stuff for sine wave!
add basic pod construction
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