Important bugfix and feature release

Important bugfix and feature release, recommended for all users.

Significant errors in the HomSap/OutOfAfrica_3G09 and HomSap/OutOfAfrica_2T12 models have been fixed. We recommend repeating any analyses performed using these models. See here for more details on the error in the three population Out of Africa model and analysis of the differences from the correct model.

The recombination rate for AraTha was also off by a factor of 10. We recommend repeating any analyses performed using this species.

Bug fixes:

• Fix error in HomSap/OutOfAfrica_3G09 model, in which migration between ancestral African and European populations was allowed to continue in the most ancient time period (@apragsdale, #496, #516).

• Fix similar error in HomSap/OutOfAfrica_2T12 model (@ndukler, #520, #516).

• Fix recombination rate estimate for AraTha (@grahamgower, #537, #527), which was off by a factor of 10.

• Require attrs >=19.10 (@grahamgower, #399, #394)

New species:

• Canis familiaris (@grahamgower, #375).

• Pongo abelii (@apragsdale, #363).

New models:

• HomSap/PapuansOutOfAfrica_10J19 model (@grahamgower, #372). QC’d by @noscode, #387.

• HomSap/AshkSub_7G19 model (@agladstein, #494). QC’d by @ndukler, #536.

New features:

• SLiM simulation engine (@grahamgower, #409, plus numerous others. See e.g. #132 and #133 for background.)

• Support for DTWF, SMC, and SMC’ models in msprime engine (@grahamgower, #398, #392).

• Warnings for users running simulations on non-autosomes (@grahamgower, #407).

• Migrate all genetic map data to AWS (@ndukler, #514, #335)

• Warnings for users running simulations on non QC’d models (@grahamgower, #525).

• Add generation_time (default=1) attribute to generic models (@grahamgower, #477, #471).

• Various documentation and citation improvements.

Breaking changes:

• Move the –quiet/-q command line option to the top-level. Previously we would write stdpopsim HomSap -q 10 whereas we now write stdpopsim -q HomSap. (@jeromekelleher, #515, #547)

• The long form --verbosity argument has been changed to --verbose (#547).

• Removed DroMel chrM (@grahamgower, #528, #405).