hertz 0.3.0

useful functions for working with frame-rates, sample-rates other rates, time durations, frequencies, etc and for keeping a constant framerate
Documentation
# contributing

**bugfixes, issues and discussion are always welcome.  
kindly [ask](https://github.com/snd/hertz/issues/new) before implementing new features.**

i will happily merge pull requests that fix bugs with reasonable code.

i will only merge pull requests that modify/add functionality
if the changes align with my goals for this package,
are well written, documented and tested.

**communicate !**  
[write an issue](https://github.com/snd/hertz/issues/new) to start a discussion before writing code that may or may not get merged.

[this project adheres to the contributor covenant 1.2](CODE_OF_CONDUCT.md). by participating, you are expected to uphold this code. please report unacceptable behavior to kruemaxi@gmail.com.

unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the [apache-2.0](LICENSE-APACHE)
license, shall be dual licensed as above, without any additional terms or
conditions.