Despite the changelog for 1.4.5 for 1.10.2 claiming to have added a config for the igniting, looking at the relevant part of the source, the commit was only for the 1.11.2 version of the mod (6b3fe8d)
and there is no igniting items part to the config defined in ItemDummyContainer in the 1.10.2 branch
This is reinforced by a freshly generated config file lacking the config option too.

Oh right, my bad. The new version should be available in a second.