bump version (#539)

* bump version

* Update pyproject.toml

bump version (#538)

Update pyproject.toml (#536)

deprecation warning for sorted parameters (#532)

* warn when registering array

* bump version

prepare for release: v2.0.0 (#529)

Update version (#495)

Prepare for release: bump version, tighten dependency constraints (#482)

* bump version, tighten dependency constraints

* fix error caused by matplotlib API change

Update version in setup.py

Update setup.py

Update setup.py