Add default extensions (ported from hooks)
treeaeae5379f6314a049c33c80a88bafcae7cfeccd2
drwxr-xr-x - .tx
-rw-r--r-- 35147 COPYING
-rw-r--r-- 143 MANIFEST.in
-rw-r--r-- 6526 README
drwxr-xr-x - bin
-rw-r--r-- 4661 makefile
drwxr-xr-x - po
-rw-r--r-- 6954 setup.py
drwxr-xr-x - share
drwxr-xr-x - src
drwxr-xr-x - tools