Fix hca version number

Newer version use new token security method which breaks existing
code

Author: jessebrennan

setup.py

@@ -26,12 +26,13 @@ def read(fname):
     },
     long_description=read('README.md'),
     long_description_content_type="text/markdown",
-    install_requires=['boto3 >= 1.6.0, < 2',
+    install_requires=['boto3 >= 1.7.0, < 1.8',
                       'cloud-blobstore >= 2.1.1, < 3',
+                      'CommonMark == 0.7.5',
                       'crcmod >= 1.7, < 2',
                       'dcplib >= 1.3.2, < 2',
                       'google-cloud-storage >= 1.9.0, < 2',
-                      'hca >= 4.1.3, < 5',
+                      'hca == 4.1.4',
                       'requests >= 2.18.4, < 3'],
     license='Apache License 2.0',
     include_package_data=True,