py-gitpython: update to 2.1.5, add py36 subport

python/py-gitpython/Portfile

@@ -3,7 +3,7 @@ PortSystem        1.0
 PortGroup         python 1.0
 PortGroup         github 1.0
 
-github.setup      gitpython-developers GitPython 2.1.3
+github.setup      gitpython-developers GitPython 2.1.5
 name              py-gitpython
 
 platforms         darwin
@@ -15,10 +15,10 @@ long_description  GitPython provides object model access to your git \
                   repository. Once you have created a repository object, you \
                   can traverse it to find parent commit(s), trees, blobs, etc.
 
-checksums           rmd160  717145b8bf926494bbf3c4ad2d2786ba17943de0 \
-                    sha256  26c1d80ad248a4abe2ebcc7191b48586ee595faad0353954e2d0e9832e454ff8
+checksums           rmd160  48fe93432cd4bd42ea64e1a500c3b7577c8e5af8 \
+                    sha256  7bd6fffcbf1859a849515425a280cb496f75f245ca109d8774e10f85ee0e540f
 
-python.versions     27
+python.versions     27 36
 
 if {${name} ne ${subport}} {
     depends_build-append    port:py${python.version}-setuptools