1.0.0

initial release

1.0.1

update readme

1.1.0

add isBigInt
isNotNullish
isNotNull
isDefined
assertIsBigInt
assertIsNotNullish
assertIsNotNull
assertIsDefined
renamed isNullOrUndefined to isNullish
renamed assertIsNullOrUndefined to assertIsNullish

1.2.0

added support for custom error messages in type assertions

1.2.1

updated dependencies