specify strictness of filter operators

[jfirebaugh]

If the property value type does not match the filter value type, specify what happens for each operator type.

[jfirebaugh]

I'm implementing strict operators for v6 filters. 0 == '0', 0 < '1', 0 in ['0'], etc. will all return false for both js and native. This was previously inconsistent between the two, with JS being strict in == and != where native was not. Both were relaxed for less/greater than operators but I don't see a good reason to do so and it significantly complicates the native implementation.

@nickidlugash @edenh @tmcw @mourner Any objections?

[edenh]

👍

[nickidlugash]

👍

[kkaefer]

reason for being lazy is bad data in vector tiles when numbers were encoded as strings, but I think most of those instances are gone.