Merge pull request #177 from CitrineInformatics/bugfix/pint-version-cap

Cap pint at less than version 0.20.0.

Author: anoto-moniz

setup.py

@@ -2,7 +2,7 @@
 
 
 setup(name='gemd',
-      version='1.11.0',
+      version='1.11.1',
       url='http://github.com/CitrineInformatics/gemd-python',
       description="Python binding for Citrine's GEMD data model",
       author='Citrine Informatics',
@@ -19,7 +19,7 @@
       },
       install_requires=[
           "toolz>=0.10.0,<1",
-          "pint>=0.13,<1",
+          "pint>=0.13,<0.20.0",
           "deprecation>=2.0.7,<3"
       ],
       extras_require={