Update setup.cfg

Author: hrchu

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = solid-file
-version = 0.0.1
+version = 0.0.3
 author = hrchu
 author_email = petertc.chu@gmail.com
 description = Solid Python library (http://solidproject.org)
@@ -19,7 +19,10 @@ classifiers =
 package_dir =
     = src
 packages = find:
-python_requires = >=3.8
+python_requires = >=3.7
+install_requires =
+    httpx==0.18.2
+    rdflib==5.0.0
 
 [options.packages.find]
-where = src
+where = src