Bump version. 3.3.1

Merge pull request #75 from MarcCote/fix_buffer_overflow

Truncate very long action to avoid buffer overflow.

Add missing requirements.txt in MANIFEST.in

Add missing requirements.txt in MANIFEST.in

3.1.2 - Remove Python wheel from release as it presents libfrotz to b…

…e compiled

3.1.2 - Remove Python wheel from release as it presents libfrotz to b…

…e compiled

3.1.1

Update README.md