update version to 0.3.3 (#301)

* Update Pipfile.lock for urllib and pillow vulnerabilities

* Update setup.py

* switch to 0.3.3 -- 0.3.2 was taken

Co-authored-by: Annabel Lee Lin <all273@cornell.edu>

Author: annabel48lin

setup.py

@@ -5,7 +5,7 @@
 
 setup(
     name = 'aguaclara',
-    version = '0.3.2',
+    version = '0.3.3',
     description = (
         'An open-source Python package for designing and performing research '
         'on AguaClara water treatment plants.'