VCMI 1.5.7

<!--Warning: saved games from 1.3 release are not supported-->

Note: saved games from 1.4 release can be loaded in 1.5

Changelog

• Player Changelog: 1.5.6 -> 1.5.7
• Full Changelog: https://github.com/vcmi/vcmi/compare/1.5.6..1.5.7

Additional builds

<!-- - Android release will be available on Google Play shortly --> <!-- - Linux release will be available on Flathub shortly --> <!-- - Ubuntu release will be available on VCMI PPA shortly --> <!-- - Android release is available on [Google Play](https://play.google.com/store/apps/details?id=is.xyz.vcmi) --> <!-- - Linux release is available on [Flathub](https://flathub.org/apps/eu.vcmi.VCMI) --> <!-- - Ubuntu release is available on [VCMI PPA](https://launchpad.net/~vcmi/+archive/ubuntu/ppa) -->

• Android release is available on Google Play
• Linux release is available on Flathub
• Ubuntu release is available on VCMI PPA