Elasticquery

+ Add support for `Aggregate.cardinality`

+ Add support for `Filter.multi_match`

+ Add support for `Filter.bool`

+ Add `Filter.fuzzy_like_this`
+ Add `Filter.filtered`

+ **Breaking change**: rename `ElasticQuery.limit` -> `ElasticQuery.size` to be more inline with Elasticsearch
+ Add `cache=False` to `Filter.raw_string` and `Filter.string`

+ Stupid bugfix