v5.0.0

Breaking Change

• [changed] - To solve #8 and provide better async/await compatibility, .then() has been renamed to .fmap().

v4.0.0

Maybe

• [changed] - Tighten up Maybe in #7 to match the Fantasy Land spec closer. Just(null) and Just(undefined) no longer collapse empty values like maybe() does.
• [changed] - Internally, Nothingness is based on the Empty symbol rather than undefined now.
• [added] - isNothing now does what toBoolean said it did, and the comment on toBoolean was updated.

v3.3.0

Reader

• [added] - Added the Reader<E, A> monad.

v3.0.0

Maybe

• [changed] - fix the Maybe.prop inference in #4, breaking existing usages

v2.0.0

Either

• [changed] - Minor breaking change to remove the empty() implementation's reliance on undefined