0.3.2

Another housekeeping version:

• Version of lxml extended to < 4.0 (3.4, 3.5, and any future 3.6 version or above),
• Tox configuration updated to test python 2.7 with lxml 3.0, 3.4 and latest.

Fun fact: it still works with Python 2.7 and latest version of lxml!