Got required library download, extraction and installation working for cqparts in update_dependencies script.

.gitignore

@@ -1,3 +1,4 @@
 *.pyc
 .idea/
 .DS_Store
+temp/

Tools/update_dependencies.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Updates the third party libraries and their dependencies
+# Needs pip installed, and is a Linux-only script
+# This should be run from within the Tools directory of cadquery-freecad-module
+
+# Set up a temporary directory for downoading and extracting
+if [ -d "temp" ]; then
+  rm -rf temp/
+fi
+mkdir temp/
+cd temp/
+
+# Grab all cqparts packages
+pip search cqparts- | awk '{print $1}' | xargs -L1 pip download
+
+# Removing these allows us to stick with our already installed versions
+rm pyparsing*
+rm cadquery*
+
+# Put the required libs in the proper place
+ls *.whl | grep -v cqparts | xargs -L1 unzip
+ls *.whl | grep -v cqparts | tr '[:upper:]' '[:lower:]' | awk -F "-" '{print $1}' | xargs -I {} cp -R {} ../../Libs/
+
+# Clean up any libraries that were just single files
+deps=`ls *.whl | grep -v cqparts | tr '[:upper:]' '[:lower:]' | awk -F "-" '{print $1}'`
+for dep in $deps; do
+  cp "${dep}.py" ../../Libs/
+done