FAST.Farm nice to haves: collected list

[andrew-platt]

This may duplicate a few existing issues

Nice to haves

• terrain following output
  • XY output slice at some height above ground
• subslicing
  • we don't always want the full extents, so a smaller slice would be really nice
• terrain input
  • there is an issue on this... somewhere I think.
  • Read in from a few different formats
• SVG output at init with wind boxes, turbine locations, turbine diameter, high res grid, low res grid, partitions in high/low