python-numexpr: Rebuild for python 3.7

mingw-w64-python-numexpr/PKGBUILD

@@ -4,7 +4,7 @@ _realname=numexpr
 pkgbase=mingw-w64-python-${_realname}
 pkgname=("${MINGW_PACKAGE_PREFIX}-python2-$_realname" "${MINGW_PACKAGE_PREFIX}-python3-$_realname")
 pkgver=2.6.5
-pkgrel=1
+pkgrel=2
 pkgdesc="Fast numerical array expression evaluator for Python, NumPy, PyTables, pandas (mingw-w64)"
 arch=('any')
 url="https://github.com/pydata/numexpr"