As a potential user, I want to understand OpenOpt's capabilities and current development status. List three distinct types of optimization problems it can solve from the 'Problems Tree'. Additionally, state the last confirmed software release date from the 'Changelog' and the last year of recorded activity in the forum.
Navigate to the 'Problems Tree' page. Identify and list at least three distinct problem classes. Navigate to the 'Changelog' page. Identify and state the last confirmed software release date. Navigate to the 'Forum' page. Identify and state the last year of recorded activity in the forum.
Successfully identify and list at least three distinct problem classes from the 'Problems Tree' (e.g., LP, QP, MILP, etc.). State the last confirmed software release date as '2012-March-15' (or 0.38 from 2012-03-15). State the last year of recorded activity in the forum as '2012'.