Add AttributeInteger for writing int values #827
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Currently we offer only AttributeNumeric for writing numeric values from Lua. This is mapped to a (4-byte) float in the vector tile. Floats are lossy and potentially less efficient.
This adds an
AttributeIntegermethod, which writes int values to the vector tile. Internally this is currently stored as a double (so much less lossy), and on output to the vector tile it should use fewer bytes in most circumstances.