Hello,

I maintain GMPY and GMPY2 and I'd like to provide a patch to resolve 
compatibility issues with GMPY2.

The most significant difference is that support for mpq.numerator and 
mpq.denominator was added in GMPY 1.13 and is available in GMPY2 (and in 
Python's standard Fraction type). The code in polys uses the old 
mpq.numer() and mpq.denom() functions that were removed in GMPY2. Would it 
be acceptable to change the minimum version of GMPY to 1.13 from 1.03? Then 
the mpq.numer() calls could be changed to mpq.numerator, etc. 

I've resolved most of the other remaining issues but there are a couple 
that I'm still tracking down. I just want to verify that upgrading the 
minimum version to 1.13 is acceptable.

Regards,
casevh

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