Plateaus, Ramps, Steps, and Tiles

Add a Terrain Mapper tab to the region configuration with options to make a 3d region shape:

1. Plateau: Region treated like a physical plateau with a flat top at a given elevation. Note that the region affected area can continue above the plateau.
2. Ramp/Steps: Like Plateau but the top goes from a low to a high elevation, either continuously or at a given step size.

Modify the SetElevation behavior to act like stairs, moving a token up or up/down.
Automatically adjust token elevations as they move across region plateaus/ramps/steps, accounting for flying or burrowing tokens.

Add config options to overhead tiles to treat them as a "floor" at the set tile elevation. Include options to ignore the transparent rectangular boundary and to treat transparent tiles (alpha <= 0.75 ) to be holes. Add CONFIG.terrainmapper.holePercentThreshold to modify how large the hole has to be for a token to "fall through."

Set scene config elevation step to "0.1" so that it accepts decimal values. Closes #33.
Added basic Brazilian Portuguese translation. Thanks @Kharmans!
Modifications to better support move and move penalty calculations in Elevation Ruler when crossing regions or tiles.

What's Changed

• pt-BR Translation by @Kharmans in #30

New Contributors

• @Kharmans made their first contribution in #30

Full Changelog: 0.3.3...0.4.0