Rename argument add comments

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Rich time predicates

TODO: Add value predicates

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Add value predicates

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>
Bugfix: Fix reqular expression

Signed-off-by: Zlatozar Zhelyazkov <zlatozar@gmail.com>