Updated the minimum minfx dependency version number from 1.0.9 to 1.0.11 in the dep_check module.
This newest version handles infinite target function values preventing optimisation from continuing
forever (https://gna.org/forum/forum.php?forum_id=2477). The 1.0.10 version is also useful as there
is full support for gradients and Hessians in the log-barrier constraint algorithm
(https://gna.org/forum/forum.php?forum_id=2475).
