Replace Python numerical kernels with native C execution

.gitignore

@@ -15,6 +15,10 @@ htmlcov/
 
 # Local Linux toolchain (downloaded for the startup scripts)
 .tools/node-*-linux-x64/
+.tools/node-*-win-x64/
+
+# Local benchmark archives, generated executables and comparison outputs
+/test/
 
 app/data/
 frontend/node_modules/