allow rdflib 6.0.0

There are no major changes in 6.0.1,
we should not be too strict as a library here.

Author: lopuhin

requirements.txt

@@ -2,7 +2,7 @@
 # pip install -r requirements.txt
 lxml
 requests
-rdflib>=6.0.1; python_version>="3.7"
+rdflib>=6.0.0; python_version>="3.7"
 rdflib<6.0.0; python_version<"3.7"
 rdflib-jsonld<=0.5.0; python_version<"3.7"
 pyrdfa3

setup.py

@@ -41,7 +41,7 @@ def get_version():
                       'rdflib<6.0.0;python_version<"3.7"',
                       'rdflib-jsonld<=0.5.0;python_version<"3.7"',
                       # rdflib 6.x.y (only on 3.7 and up) contains jsonld
-                      'rdflib>=6.0.1;python_version>="3.7"',
+                      'rdflib>=6.0.0;python_version>="3.7"',
                       'pyrdfa3',
                       'mf2py',
                       'w3lib',