pydna 3.0.1

[Björn Johansson]

Hi all, There is a new version 3.0.1 with backwards breaking changes, especially for 

the assembly function. Please upgrade to 3.0.1 and not 3.0.0 since I discovered a subtle 

bug when updating some pydna projects.

Documentation is unfortunately lagging behind. I will try to update at least the docstrings for 

the assembly module.

One of the goals for the new version was to make it deterministic i.e. when run on a CI server for instance,

output should only depend on indata. Some functions like assigning feature colors for sequences and

less predictably the assembly did not behave in this way. Now I believe it does.

Test coverage is also almost 100% on most files for the new version.

Cheers,

Björn