Allow errors when checking the adapted values (so we get the message about not being able to generate enout points, for example).  This resolves bug 2776.
Fix relative error check with adaptive parameters (resolved bug 2784)
Merge pull request #54 from dpvc/bugfix/2.8-FormulaUpToConstant

Bugfix/2.8 formula up to constant
Merge pull request #55 from dpvc/bugfix/2.8-adaptive-params

Bugfix/2.8 adaptive params