Change extract_annotations return value.
-rwxr-xr-x 93 .gitignore
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-rw-r--r-- 34519 LICENSE
-rw-r--r-- 830 NOTICE
-rw-r--r-- 2570 README.md
drwxr-xr-x - librarian
drwxr-xr-x - scripts
-rw-r--r-- 152 setup.cfg
-rwxr-xr-x 1822 setup.py
drwxr-xr-x - tests