Merge pull request #87 from l0g0sys/master

Added support for Ambidexterity notable passive skill.
Merge remote-tracking branch 'upstream/master'
Merge pull request #88 from l0g0sys/master

Fixed crash when using Spiked Bundle shield.
Merge remote-tracking branch 'upstream/master'
Fixed ItemDB XML serializer to use LF line endings instead of non-standard CR/LF.
Fixed ItemDB creating duplicate attribute value entries when merging value/quality value ranges.