Game data exports will becoming later as the technical changes in addition to regular changes take some more time.
As part of the Unified Community Platform project, your wiki will be migrated to the new platform in the next few weeks. Read more here.
Item classes which count as One Handed:
In almost all cases, modifiers for One Handed apply only to melee, for example using the phrase "One Handed Melee Weapons" on a passive skill. See One-handed melee weapon.