* Replacement of POLCA by [pypolca](https://github.com/gbouras13/pypolca) as it will be easier to integrate, install and maintain going forward, and allows for POLCA use on MacOS.
* Adds `--no_medaka` to skip long read polishing with Medaka.
* Adds per contig stats output tsv file.
* Adds `--dnaapler_custom_db`.
* simone-pignotti fixed some errors with fastp redirection and threads.
* Adds various small improvements (mem for PBS use, various other params and paths, some of the conda envs).