Merge pull request #84 from uhoreg/is_struct

add an is_struct?/2 predicate

Merge pull request #83 from uhoreg/type_casting

allow types to be unions that include casts

allow casting to maps in types

allow types to use casting

Remove operation stuff (it was moved to drops_operation repo)

Update README.md

Add FUNDING.yml

Merge pull request #80 from solnic/operations-telemetry

Introduce Telemetry operations extension

Merge pull request #79 from solnic/operation-extensions-with-deps

Add depends_on to Operations extensions

Merge pull request #78 from solnic/operation-traces

Add trace to UoW