v1.5.8 (Bug fixes)

Bug fix/ Bug: Invisible ally exist on battle field sometimes. Bug fix/ Bug: Raise Floor skill's duration is displayed wrong. Bug fix/ Bug: Regenerate ticks on dead units. Bug fix/ Bug: Knowledge book is not memorizable in certain situation. Bug fix/ Minor bug fix on Party information screen when number of members is more then 8. UI/ Added regenerate vfx.