Fix scaled interpolation for Unitful ranges.

[contradict]

No description provided.

[codecov]

Codecov Report

Merging #490 (38d58d7) into master (fc3d8d2) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #490   +/-   ##
=======================================
  Coverage   86.75%   86.75%           
=======================================
  Files          27       27           
  Lines        1819     1819           
=======================================
  Hits         1578     1578           
  Misses        241      241           

Impacted Files	Coverage Δ
src/scaling/scaling.jl	90.57% <100.00%> (ø)

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[mkitti]

It looks like we are intentionally removing units from coordlookup, is that right?

[contradict]

Correct, the output of coordlookup is used to index the UnitRange of the original interpolation object, so it should not have units.