Fwdpy11

Contains 529 and 530.

Please use either the PyPi source release or this:

[fwdpy11-0.8.0a1.tar.gz](https://github.com/molpopgen/fwdpy11/files/4788323/fwdpy11-0.8.0a1.tar.gz)

This release has load of changes--see the change log in the manual for details.

Most important thing is the implementation of an efficient replacement for edge table sorting during simulation.

This is the `sdist` for this release, which you should use instead of the GitHub auto-generated files:

[fwdpy11-0.8.0a0.tar.gz](https://github.com/molpopgen/fwdpy11/files/4766770/fwdpy11-0.8.0a0.tar.gz)

This is mostly a maintenance release. The only new feature is that we allow preservation of the first generation to facilitate correct tree sequence "recapitation". See the manual for details.

This release adds a major feature, which is to allow mutation effect sizes to differ across demes. See the change log in the manual for details + links to the new manual pages describing this feature.

A few bugs were squashed, too, and several important changes to the C++ back end also happened.

Milestone 0.7.0 contains all the relevant issue/PR links.

Fixes 437

Fixes the following issues:

* 420
* 421
* 422
* 432
* 428

Also makes an important back-end change to the C++ implementation of a Population. 427