Release zero?

From chat session.. Release zero * [x] Making an experimental editor * [x] Reducing verbosity - e.g. so you don't have to put pure() everywhere * [x] Tidying up the code, using decorators to 'patternify' parameters * [x] Exploring possibilities for partial application, to make .jux(rev) possible * [x] Implement signals * [ ] Port core combinators * [x] jux * [x] rev * [ ] iter * [ ] Expand test suite coverage * Including signals * [ ] Get tests running in codeberg [Sylvain] * [ ] Generally Evaluate codeberg.. * [ ] Review files - remove some ? * [ ] Remove some nesting in directory structure [Sylvain] * [ ] Tidy * [ ] add _ prefix to internal functions - might leave this for now, very difficult to know where to draw the line.. * [x] `__class__` -> Pattern * [ ] Expand and normalise variable names * [ ] Check that you can add numbers to patterns of numbers * [ ] Euclidean patterns * [ ] Match behaviour of slowcat etc with tidal (maybe keep current version for fun?) Release one * [ ] Implementing a mininotation * [ ] Implement all the pattern transformation functions etc * [ ] Improve error messages * Define custom error messages with a lot of try + except * Make decisions about the best way to handle errors 'musically'