What's Changed
* Add combinedType min and max, fixes 62 by abhidg in https://github.com/globaldothealth/adtl/pull/64
* Allow external definitions, fixes 10 by abhidg in https://github.com/globaldothealth/adtl/pull/66
* Allow fields to be skipped by pipliggins in https://github.com/globaldothealth/adtl/pull/67
* Add ignoreMissingKey option for values mapping by abhidg in https://github.com/globaldothealth/adtl/pull/68
* Add exception tests by pipliggins in https://github.com/globaldothealth/adtl/pull/69
* Fixes behaviour where for loops combine with apply by pipliggins in https://github.com/globaldothealth/adtl/pull/70
* Allow 'getFloat' to scrape a number from a string with other text by pipliggins in https://github.com/globaldothealth/adtl/pull/72
* Allows optional-fields to cover oneOf options for e.g. sex/sex_at_birth by pipliggins in https://github.com/globaldothealth/adtl/pull/71
* Allow date formats to be specifed in yearsElapsed function by pipliggins in https://github.com/globaldothealth/adtl/pull/73
* Add --json to output adtl report as json by abhidg in https://github.com/globaldothealth/adtl/pull/74
* Function to make datetime from separate date & time fields by pipliggins in https://github.com/globaldothealth/adtl/pull/76
* Increase test coverage by abhidg in https://github.com/globaldothealth/adtl/pull/77
* Add documentation using Sphinx, closes 9 by abhidg in https://github.com/globaldothealth/adtl/pull/78
* transformations: add wordSubstituteSet by abhidg in https://github.com/globaldothealth/adtl/pull/80
* Date of birth functions by pipliggins in https://github.com/globaldothealth/adtl/pull/79
* combinedType(wordsubstituteset): flatten lists by pipliggins in https://github.com/globaldothealth/adtl/pull/84
* Add documentation on module and transformations, update theme by abhidg in https://github.com/globaldothealth/adtl/pull/82
* add regexMatch operator `=~` by abhidg in https://github.com/globaldothealth/adtl/pull/83
**Full Changelog**: https://github.com/globaldothealth/adtl/compare/0.4.0...0.5.0