[ci skip] Merge PR 28867
[ci skip] Merge PR 28867

Merge PR #28867, commits were: 
 * Try to skip Py36 (again)
 * okay, that didn't work (even tho it is in the docs...)
 * Require Py >= 3.7
 * Remove explicity skip of Py36
 * fix demes versioning in meta.yaml
 * add license_file
 * fix build number
 * Bump fwdpy11 to 0.15.0

cokelaer/bioconda-recipes,npavlovikj/bioconda-recipes,phac-nml/bioconda-recipes,bebatut/bioconda-recipes,peterjc/bioconda-recipes,rob-p/bioconda-recipes,peterjc/bioconda-recipes,cokelaer/bioconda-recipes,npavlovikj/bioconda-recipes,gregvonkuster/bioconda-recipes,acaprez/recipes,zachcp/bioconda-recipes,bebatut/bioconda-recipes,peterjc/bioconda-recipes,phac-nml/bioconda-recipes,rob-p/bioconda-recipes,acaprez/recipes,bebatut/bioconda-recipes,shenwei356/bioconda-recipes,phac-nml/bioconda-recipes,peterjc/bioconda-recipes,acaprez/recipes,blankenberg/bioconda-recipes,bioconda/bioconda-recipes,bebatut/bioconda-recipes,blankenberg/bioconda-recipes,peterjc/bioconda-recipes,bioconda/bioconda-recipes,bioconda/bioconda-recipes,acaprez/recipes,jfallmann/bioconda-recipes,npavlovikj/bioconda-recipes,shenwei356/bioconda-recipes,shenwei356/bioconda-recipes,shenwei356/bioconda-recipes,rob-p/bioconda-recipes,npavlovikj/bioconda-recipes,zachcp/bioconda-recipes,gregvonkuster/bioconda-recipes,jfallmann/bioconda-recipes,rob-p/bioconda-recipes,phac-nml/bioconda-recipes,cokelaer/bioconda-recipes,bioconda/bioconda-recipes,gregvonkuster/bioconda-recipes,cokelaer/bioconda-recipes,blankenberg/bioconda-recipes,zachcp/bioconda-recipes,zachcp/bioconda-recipes,blankenberg/bioconda-recipes,jfallmann/bioconda-recipes,phac-nml/bioconda-recipes,jfallmann/bioconda-recipes,peterjc/bioconda-recipes,gregvonkuster/bioconda-recipes