Updated Python versions.

Signed-off-by: David Rebbe <drebbe@intrepidcs.com>

build_all.bat

@@ -6,31 +6,20 @@ rmdir /s /q build
 mkdir old_dist
 move dist\* old_dist\
 
-C:\Python27\scripts\pip install wheel twine --upgrade
-C:\Python33\scripts\pip install wheel twine --upgrade
-C:\Python34\scripts\pip install wheel twine --upgrade
-C:\Python35\scripts\pip install wheel twine --upgrade
 C:\Python36-32\scripts\pip install wheel twine --upgrade
 C:\Python37-32\scripts\pip install wheel twine --upgrade
+C:\Python38-32\scripts\pip install wheel twine --upgrade
 
-C:\Python27-64\scripts\pip install wheel twine --upgrade
-C:\Python34-64\scripts\pip install wheel twine --upgrade
-C:\Python35-64\scripts\pip install wheel twine --upgrade
 C:\Python36-64\scripts\pip install wheel twine --upgrade
 C:\Python37-64\scripts\pip install wheel twine --upgrade
+C:\Python38-64\scripts\pip install wheel twine --upgrade
 
-C:\Python27\python setup.py sdist bdist_wheel
-C:\Python33\python setup.py sdist bdist_wheel
-C:\Python34\python setup.py sdist bdist_wheel
-C:\Python35\python setup.py sdist bdist_wheel
 C:\Python36-32\python setup.py sdist bdist_wheel
 C:\Python37-32\python setup.py sdist bdist_wheel
+C:\Python38-32\python setup.py sdist bdist_wheel
 
-
-C:\Python27-64\python setup.py sdist bdist_wheel
-C:\Python34-64\python setup.py sdist bdist_wheel
-C:\Python35-64\python setup.py sdist bdist_wheel
 C:\Python36-64\python setup.py sdist bdist_wheel
 C:\Python37-64\python setup.py sdist bdist_wheel
+C:\Python38-64\python setup.py sdist bdist_wheel
 
 REM C:\Python34\scripts\twine upload dist/* -r pypitest

setup.py

@@ -101,9 +101,6 @@ def read(fname):
 
        classifiers = [
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',