Remove indications of support for Python <3.7 and bump version number

Author: dbieber

.github/scripts/build.sh

@@ -17,7 +17,7 @@
 # Exit when any command fails.
 set -e
 
-PYTHON_VERSION=${PYTHON_VERSION:-2.7}
+PYTHON_VERSION=${PYTHON_VERSION:-3.7}
 
 pip install -U -r .github/scripts/requirements.txt
 python setup.py develop

setup.py

@@ -40,7 +40,7 @@
     'python-Levenshtein',
 ]
 
-VERSION = '0.6.0'
+VERSION = '0.7.0'
 URL = 'https://github.com/google/python-fire'
 
 setup(
@@ -63,11 +63,7 @@
         'License :: OSI Approved :: Apache Software License',
 
         'Programming Language :: Python',
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',