Replace the removed imp module with importlib.
treebcd4290f240b2fdecd14788f1733d1176cf5d4a5
-rw-r--r-- 1494 .appveyor.yml
drwxr-xr-x - .appveyor
drwxr-xr-x - .circleci
drwxr-xr-x - .github
-rw-r--r-- 242 .gitignore
-rw-r--r-- 1419 CONTRIBUTING.md
-rw-r--r-- 35147 COPYING
-rw-r--r-- 141 MANIFEST.in
-rw-r--r-- 7530 README.md
drwxr-xr-x - bin
-rw-r--r-- 6150 makefile
drwxr-xr-x - po
-rw-r--r-- 454 setup.cfg
-rw-r--r-- 7397 setup.py
drwxr-xr-x - share
drwxr-xr-x - src
drwxr-xr-x - tests
drwxr-xr-x - tools