New version with bug fixes and performance improvements

This version brings a number of important changes, including a fix for indices on in-memory matrices and quite a bit of documentation. Thanks to @elfjes for the matrix index fix!!

All changes can be seen in the list of Pull-requests below:

What's Changed

• fixes errors on qgis by @r-akemii in #417
• runs examples by @pedrocamargo in #422
• License update by @pedrocamargo in #427
• fix matrix indices for memory-only matrices by @elfjes in #425
• Pedro/cores skimming by @pedrocamargo in #426
• Updates assignment logging by @r-akemii in #423
• Fixes GMNS exporter by @pedrocamargo in #429
• moves openmatrix to a primary dependency by @pedrocamargo in #431
• Updates software version for release by @pedrocamargo in #434

Full Changelog: V0.9.2...v0.9.3