Performance issues

[ethan-leba]

There's a noticable delay once we hit ~10 statements in a block:

    private void foo(String args) {
        break;
        break;
        break;
        break;
        break;
        break;
        break;
        break;
        break;
        break;
    }

The easiest solution would likely be to special case specific node types, like REPEAT[CHOICE...] or other trivial grammar nodes.

A more likely better long-term solution would be to port the performance optimizations in faster-miniKanren to reazon.

[ethan-leba]

Bug discovered in reazon that had large effects on performance: https://github.com/nickdrozd/reazon/pull/15

Hopefully should help alot here!