Bolt

Fix
* Update beet ([`a4f2f97`](https://github.com/mcbeet/bolt/commit/a4f2f97feef98d9c9f624ffc82a3d8e5ff282337))

Fix
* Memoize command trees ([`8c8911a`](https://github.com/mcbeet/bolt/commit/8c8911ae16e3c2829c0e33dbc3a2fab248505b81))
* Make command tree updates lazy ([`ec17f74`](https://github.com/mcbeet/bolt/commit/ec17f7479072a63e8e81a8c17163d69c680a9b5e))
* Minor tweaks ([`35a537e`](https://github.com/mcbeet/bolt/commit/35a537e9a4a6e471a17cfc99b8776bdc3135fd88))

Feature
* Add macro imports ([`e8ca750`](https://github.com/mcbeet/bolt/commit/e8ca750c6664ffa610b09c17d00cb7f9eed445c8))

Feature
* Turn module manager into a mapping ([`3c486eb`](https://github.com/mcbeet/bolt/commit/3c486eb6d9ce6c9a47ec16c14342fa98db6fbfd7))
* Extract module manager from runtime ([`20e7499`](https://github.com/mcbeet/bolt/commit/20e74995ab2b44505a494e352f94d1c756ba0ec6))
* Make it possible to run the lazy plugin multiple times ([`87df070`](https://github.com/mcbeet/bolt/commit/87df070d2f528a95c06b14fb2a8b3e019e80651c))

Feature
* Working macro and tests ([`a0ddfba`](https://github.com/mcbeet/bolt/commit/a0ddfbab5a46b173ec8a0bd46f8e78c76a098c85))
* Start working on macro ([`e3bbb3e`](https://github.com/mcbeet/bolt/commit/e3bbb3e83dd2f60df2a4f8ca848782b7a83a2c84))

Fix
* Update mecha ([`e6c77e9`](https://github.com/mcbeet/bolt/commit/e6c77e9d495e7de8dcc3326ea15c2edc767249f7))

Fix
* Allow ast node interpolation directly ([`ffa076e`](https://github.com/mcbeet/bolt/commit/ffa076efa635be32c735371e2761da954385abbf))