Update to support 3.10, drop 3.7

Author: bmoscon

build-wheels.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 set -e -x
 
-py_vers=("/opt/python/cp37-cp37m/bin" "/opt/python/cp38-cp38/bin" "/opt/python/cp39-cp39/bin")
+py_vers=("/opt/python/cp38-cp38/bin" "/opt/python/cp39-cp39/bin" "/opt/python/cp310-cp310/bin")
 
 for PY in "${py_vers[@]}"; do
     "${PY}/pip" wheel /io/ -w wheelhouse/