Merge pull request #148 from traversaro/patch-3

Bump version number in doxygen.config to 3.2.2

fixing issue in Python interface, exceptionally also fast-forward to …

…point release 3.2.1

creating new release 3.2.0 from stable branch 3.2 (rev 179)

updated manual for release 3.1.1 (and trunk/stable branch) as bibliog…

…raphy was missing

creating new release 3.1.0 from stable branch 3.1 (rev 114) based on …

…trunk (rev 113)

finalizing release 3.0.1 from stable branch 3.0 (rev 73) based on tru…

…nk (rev 72)

creating new release 3.0.0 from stable branch 3.0 (rev 14) based on t…

…runk (rev 13)