tweak regex to match existing release pattern.

tweak regex to match existing release pattern.

Merge pull request GraphBLAS#16 from eriknw/update513

Update to SuiteSparse 5.1.3 (release imminent)

Merge pull request GraphBLAS#15 from eriknw/update512

Update to SuiteSparse:GraphBLAS 5.1.2

Merge pull request GraphBLAS#13 from eriknw/v5.0.3

Update to SuiteSparse:GraphBLAS 5.0.3.

Merge pull request GraphBLAS#9 from eriknw/cython_utils

Add Cython utils needed for zero-copy import and export.

Initial tag