Make predicate::* modules private with pub uses
Make predicate::* modules private with pub uses

The modules under predicate::* were not meant to be publically
available, they were meant for code organization only. Instead, their
contents should just be public uses in the predicate module.

This will trigger a new minor version as technically it changes the API
surface.

Signed-off-by: Nick Stevens <75ef9faee755c70589550b513ad881e5a603182c@bitcurry.com>

nastevens/predicates-rs