1.3.1 hotfix

This is a quick hotfix to the issues that have been found in the 1.3.0 patch, plus some balance changes.

Bugfixes:

• Fixed save not properly being created when pressing the save and exit button. The issue was introduced by the new concurrent saving system implemented in 1.3.0, because the game did not wait for the concurrent thread handling the disk saves to finish before exiting.

• Fixed an occasional crash that could occur when the continent random generation second wave option is turned on when starting a new game.

• Fixed smith projects that have a prereqvisit not being handled properly when loading a save file.

• Fixed ongoing projects/trainings remaining time not being properly updated when their corresponding building has been built.

• Fixed marathon mode unit recruitment cost increase has been unintentionally applied to standard campaigns as well.

• Fixed sword's puncture skill using the base attack animation rather than its own.

Balance changes:

• Vakondog loses their +10 attack bonus, and their min/max damage has been reduced by 2.

• Reworked one-handed sword's puncture skill to be more broadly applicable and renamed it to backstab. Instead of ignoring 6 armor, it increases the damage by +4. Additionally, replaced the -40 accuracy penalty with the requirement that it can only be used while flanking.