Update to graphblas=5.1.10 in CI; update versioneer

Author: eriknw

continuous_integration/environment.yml

@@ -3,7 +3,7 @@ channels:
   - conda-forge
   - defaults
 dependencies:
-  - graphblas=5.1.3
+  - graphblas=5.1.10
   - cffi
   - cython
   - numpy

suitesparse_graphblas/__init__.py

@@ -1,7 +1,7 @@
+from . import _version
 from . import exceptions as ex
 from . import utils
 from ._graphblas import ffi, lib  # noqa
-from ._version import get_versions
 
 
 def is_initialized():
@@ -46,10 +46,6 @@ def initialize(*, blocking=False, memory_manager="numpy"):
         raise ValueError(f'memory_manager argument must be "numpy" or "c"; got: {memory_manager!r}')
 
 
-__version__ = get_versions()["version"]
-del get_versions
-
-
 def libget(name):
     """Helper to get items from GraphBLAS which might be GrB or GxB"""
     try:
@@ -170,3 +166,6 @@ def check_status(obj, response_code):
     error_func(string, obj)
     text = ffi.string(string[0]).decode()
     raise _error_code_lookup[response_code](text)
+
+
+__version__ = _version.get_versions()["version"]