Pyccolo

-------------------
* Expose logic for resolving tracer class based on module path;

-------------------
* Expanded predicate functionality;
* New events for after if / while test, after expr stmts, after lambda body, before / after augassign rhs;
* Disambiguate between user and generated lambdas (e.g. used for before expr events);

-------------------
* Simplify binop events;
* Add compare events;

------------------
* Allow per-handler reentrancy;

------------------
* Add eval helper;
* Add syntactic macro examples (quasiquotes and quick lambdas);
* Add support for conditional handlers;

------------------
* Add cli;
* Add basic readme documentation;
* Allow returning pyc.Skip for skipping subsequent handlers for same event;
* Misc improvements to file filter hooks;
* Allow returning lambdas for before_expr events;