Mecha

Feature
* Add slicing ([`e6757fd`](https://github.com/mcbeet/mecha/commit/e6757fd8d73554544bf5343831aa9c4da9f4f6e0))

Fix
* Make ast options into sets and properly handle item_slot ([`9231bc3`](https://github.com/mcbeet/mecha/commit/9231bc3fb964cb3f5e564fad7ba3014e27a4c0e0))
* Sort ast options ([`56bd955`](https://github.com/mcbeet/mecha/commit/56bd955d602d65caae3af907b45c58843bd6a7cb))

Fix
* Proper scoreboard_slot handling ([`4740d78`](https://github.com/mcbeet/mecha/commit/4740d780ebd3662a71e39e995e0c50eb77e90dad))

Fix
* No scientific notation when serializing numbers ([`e923224`](https://github.com/mcbeet/mecha/commit/e923224acc1c308e59dbdc44e2822f4db912a075))

Fix
* Make it possible to spread nbt paths on multiple lines ([`8c66564`](https://github.com/mcbeet/mecha/commit/8c66564a6190aaf40c84b0cfce438ce128bc76d4))

Feature
* Support item and attribute assignment ([`459a2da`](https://github.com/mcbeet/mecha/commit/459a2da008e5886dcf1a82d61b21e31a381ae7bc))
* Support list and dict unpacking ([`a0267a4`](https://github.com/mcbeet/mecha/commit/a0267a47e3088ed23b93d964f0f51a46fd980ec5))
* Support keywords and unpacking for function calls ([`fbd5c9b`](https://github.com/mcbeet/mecha/commit/fbd5c9b40075513355a99869339a750d0b83c69f))
* Interpolate coordinates ([`6f8f009`](https://github.com/mcbeet/mecha/commit/6f8f009e5f6dfa92fb99a326090391b533290cde))