Moar Bresenham!

Switch to using Bresenham 3d algorithm to determine 3d grid path for square grids. Use Bresenham 4d algorithm to determine 3d grid path for hex grids (hex-cube dimensions + elevation dimension). Closes #194.
For pathfinding, don't consider walls blocking if the wall top elevation equals the token elevation (but still blocks if wall bottom elevation equals token elevation).
If Wall Height module is active and vaulting is enabled, ignore walls within the vaulting height.
Update Italian localization. Thanks @GregoryWarn!
Update Brazilian Portugese translation. Thanks @Kharmans!
Update libGeometry to v0.3.11.

What's Changed

• v0.10.6 by @Kharmans in #190
• v0.10.6 by @GregoryWarn in #193

Full Changelog: 0.10.6...0.10.7