Release 0.2.0

After a long winter, OOL 0.2.0 is on the road!

This release includes the Spectral Projected Gradient method (SPG), which is suited to large-scale problems due to its low memory requirements.

The PGRAD and GENCAN were validated with the CUTEr test problem suite, ensuring the reliability of this implemantation.

Most of the OOL Reference Manual was rewriten and/or improved. Besides, two new chapters ("Quick Start" and "Brief Theoretical Introduction") were included into the OOL Reference Manual.

Several bugs were fixed.