LimeSurvey/LimeSurvey — pull request #213 by Alain-Bearez (2014-08-31 00:47:28+00:00)
Title: Update to TCPDF 6.0.091 (2014-08-13)

It looks like the major version bump did not reflect into a major public API change.

Some methods gained new optional parameters but none where removed.

Many bugs were fixed since 5.9.131 (almost three years old).