Metrics-layer

What's Changed
* fix substring issue in merged result queries with mappings by pblankley in https://github.com/Zenlytic/metrics_layer/pull/100


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.28...v0.10.29

What's Changed
* Feature/validation improvements by pblankley in https://github.com/Zenlytic/metrics_layer/pull/98


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.27...v0.10.28

What's Changed
* add support for median aggregate function in snowflake and redshift by pblankley in https://github.com/Zenlytic/metrics_layer/pull/97


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.26...v0.10.27

What's Changed
* fix mappings issue dim includes its own canon date when joinable + coalesce responses by pblankley in https://github.com/Zenlytic/metrics_layer/pull/96


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.25...v0.10.26

What's Changed
* fix case and new expression syntax for 1.4+ by pblankley in https://github.com/Zenlytic/metrics_layer/pull/95


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.24...v0.10.25

What's Changed
* Feature/fix BQ group by alias handling by pblankley in https://github.com/Zenlytic/metrics_layer/pull/94


**Full Changelog**: https://github.com/Zenlytic/metrics_layer/compare/v0.10.23...v0.10.24