Pr/datalog rules

[CharlesHD]

Okay so this is a first draw where I implement the ideas expressed in #23
I add :

• a (reg-query-sub query-id query rules) form to reg-query-sub
• a :rules attribute to query config map

[denistakeda]

@CharlesHD re-posh heavily depends on posh library. And posh supports only subset of datascript functionality (which is a subset of datomic functionality itself). Have you verified that it works?

[CharlesHD]

Not yet, that's why it is a first draw. But my guess is it has high chance to work since posh.reagent/q is a direct call to datascript.core/q and rules work fine with Datascript.

I'll add and test a rule example in the todomvc if you are okay with that.

[denistakeda]

Sure, it would be great

[CharlesHD]

OK. After some investigations, rules are broken in posh5 as stated in mpdairy/posh#23 . So that PR is bounded by some progression in posh. Too bad.