Update changelog for 2.7.2 release

NEWS

+Version 2.7.2 (2018-03-26)
+==========================
+
+Bugfixes
+--------
+
+- Fixed an issue with the setup script running in non-UTF-8 environment.
+  Reported and fixed by @gergondet (gh pr #651)
+
+
+Misc
+----
+
+- GH #655
+
+
 Version 2.7.1 (2018-03-24)
 ===========================
 

changelog.d/651.misc.rst

-Fixed an issue with the setup script running in non-UTF-8 environment. Reported and fixed by @gergondet (gh pr #651)

changelog.d/655.misc

-Update PyPI links to point to pypi.org.