Note: in most of the specifications, the TC depends on the resistor's value.
Since we don't have a useful way to express this sort of dependency, the
TC values are always the worst lower and upper bound for a given package.
- boom/test.sub (R): recognize #ppm/K as temperature coefficient
- boom/manu/yageo/yageo.gen: convert FP=0100 to canonical FP=01005 and
then work with that value
- boom/manu/panasonic/panasonic.gen, boom/manu/stackpole/stackpole.gen,
boom/manu/yageo/yageo.gen: added temperature coefficients