Patch 5 : Multiple function optimizations — WindStop Strategy Steam update #1140340

New:​ Items sold to shops can now be repurchased at their original price from that same shop (they will be retained for 2 turns).New:​ Auto-save slot upon ending a turn.Adjustment:​ Skill Transmission now supports both the new (consuming Skill Points after a skill is maxed out) and the old (using a skill book on someone who already knows that skill) modes.Adjustment:​ Reduced the Skill Points cost for Skill Transmission.Adjustment:​ Holding the Z key for fast-forward will no longer skip across cutscenes.Fix:​ Issue where it was still possible to pledge allegiance to the ShengJianMen Sect after its destruction.Fix:​ Issue where Night Crow would still attack the ShengJianMen Sect after its destruction.(Would result in JiYeman's erroneous death.)