Bump version to 0.16.0 (#140)

* Bump version to 0.16.0

* Bump Python versions

* Disable coveralls on Python >= 3.13

Bump version (#75)

* Bump version

* Update changelog

Bump version (#67)

* bump version

* update changelog

Bump version (#65)

* bump version

* update changelog

bump version (#62)

bump version (#58)

Change args in custom functions (#54)

* pass custom function arguments separately

* update README

* bump version

Readme update (#53)

* update description of custom functions

* bump version

Change functions API (#52)

* change custom functions API

* update README

* bump version

Readme fix (#41)

* uncomment code in README

* bump version