Draft: requirement updates

requirements.txt

@@ -1,12 +1,29 @@
+# Python 3.7 - 3.10
+opencv-python==4.2.0.32; python_version <= "3.7"
+opencv-python~=4.5.5.64,<=4.5.5.64; python_version < "3.10"
+opencv-python==4.5.5.64; python_version == "3.10"
+
+# opencv 4.5+ will install numpy>=1.21.2
+numpy==1.18.4; python_version >= '3.0' and python_version <= "3.7"
+
+# 2.2 breaks in 3.10
+networkx==2.2; python_version < "3.10"
+
+networkx>=2.7<3.0; python_version >= "3.10"
+
+# Python 3.10 + 
+opencv-python~=4.5.5.64,<=4.10.0.84; python_version > "3.10"
+
+# Needs to be more fine grained
+Shapely==1.7.1; python_version < "3.10"
+Shapely==1.8.*; python_version == "3.10"
+
 py-trees==0.8.3
-numpy==1.18.4; python_version >= '3.0'
-networkx==2.2
-Shapely==1.7.1
+
 psutil
 xmlschema==1.0.18
 ephem
 tabulate
-opencv-python==4.2.0.32
 matplotlib
 six
 simple-watchdog-timer