Due to the data structure to being intended immutable, the hash value
cannot change during object lifetime. This commit caches the value
upon first evaluation.

Avoid using specific Py3 sub-versions for CI

See merge request !22

Run pylint in CI

See merge request inducer/pytools!17

CI: Drop Py35, add Py36

See merge request !21

Fix Py3.7 deprecation

See merge request !20

Placate flake8 3.6

See merge request inducer/pytools!19

Add Pytest/JUnit/Gitlab integration

See merge request inducer/pytools!18

Bump version for ProcessTimer.

See merge request inducer/pytools!16

Add a ProcessTimer class for recording timing data.

See merge request inducer/pytools!15

Fix import and encoding bugs

Add reshaped_view function

See merge request inducer/pytools!13

Fix a misleading assertion in test_pickling_with_module_import(). Only globals in the module are pickled

Support pickling modules with top-level import statements

See merge request !12