either a tuple, reduction, or a substitution invocation).

Also, rewrite the reduction mapping code to rely on recursive calls
map_tuple(). This cleans up a lot of reduction mapping code
substantially.

* Eliminates inames arguments to reduction functions (closes #32).
* Changes the argmax function to accept two arguments.

See also: #62

Fix parallel multi-output reduction (Fixes #31 on Gitlab)

Closes #31

See merge request !91

Lazily unpickling dictionary

Closes #29

See merge request !89

and __setstate__() doesn't run if the state is False.

Ensure that we always return a non-false state (another version bump
here).

Enable Py3.6 tests

See merge request !87

Dep resolve fixes

See merge request !86

Add a regression test for #23.

See merge request !85

Clean up use of 'iname' variable in generate_sequential_loop_dim_code (found by @mattwala)

See merge request !84