molpopgen/fwdpy11: New features, new manual, new packaging, and bug fixes!

Details are collected under milestone 0.13.0 Copy/paste from the change log: API changes The demesizes keyword is no longer accepted to initialize instances of {class}fwdpy11.DiploidPopulation. {pr}676 {meth}fwdpy11.TreeIterator.nodes no longer takes an argument. {pr}678 The type of {attr}fwdpy11.Mutation.g changed from an unsigned integer to a signed integer. This change has no practical consequence to user code written in Python. {pr}656 {pr}670 New features The dominance of a mutation may now be specified by a function. See {ref}mutationdominance_vignette. {pr}590 {pr}629 {pr}630 Add {meth}fwdpy11.TableCollection.build_indexes. {pr}651 Improved IDE and editor integration Several key classes and functions were reimplemented. They are now Python layers on top of the C++. These changes allow better type hinting and make the docstrings more easily discoverable, resulting in jedi, etc., being better able to use them for auto completion and other tasks. {pr}676 {pr}677 {pr}678 Packaging changes The build system is now PEP 517/518 compliant. {commit}cfd95f57e97d0fff6d4d87d06bd280d2f58ea545 setup.py no longer imports pybind11. {pr}634 Bug fixes Fixed bugs in experimental features involving simulating neutral mutations during simulations recording ancient samples. These fixes make these features less experimental and part of the API now. {pr}643 {pr}647 {pr}650 Improved input parameter validation for {func}fwdpy11.evolvets. {pr}649 Fixed a bug where mutations on branches generated by msprime had invalid origin times, leading to exceptions when calling {meth}fwdpy11.DiploidPopulation.dump_tables_to_tskit. {pr}656 {pr}670 Deployment changes Pushes to main and new releases now trigger updates to a Docker image. See {ref}sec_deployment. {pr}652 {pr}663 {pr}671 {pr}672 Binary wheels are automatically deployed for macOS and Linux for new releases. {pr}669 Documentation changes The manual is now built with jupyter book. {pr}653. The manual is now longer hosted on Read The Docs. It has been moved here and is automatically deployed by GitHub actions. {pr}654