Changes since tag 8.2.5.01

commit 2f9bb63b51843e50970fd8dc1275c32513db96db
Author: Quentin Giraud <dev@aethys.io>
Date:   Fri Nov 15 08:36:48 2019 +0100

    perf: various small optimizations

commit c2ed0dcc9008058247c65a9bf2b7c4d66e61da69
Author: Quentin Giraud <dev@aethys.io>
Date:   Fri Nov 15 07:49:34 2019 +0100

    perf: Cache the GetSpellPowerCost table

