Release 4.0.0-beta.0

• clean up README and exposed typings (c649675)
• clean up more typing (2d435af)
• clean up typing for Meta (898a944)
• update exposed typings for createCustomCircularEqual (7c71d93)
• code golf to get size down (0f3635a)
• inject areDatesEqual for complete coverage, in case someone wants a more targeted comparison (45a52c3)
• share configs (f423c80)
• avoid need to pass through default options with createCustomEqual (aeeb335)
• update dependencies to latest (55bdfd2)
• early return in Map / Set iterations when already not-equal (eae8cc3)
• switch to tag-based comparison, to support cross-realms (d63aecf)
• update size again (64781e4)
• remove legacy regexps check (4db62fe)
• update exposed types (6a0613b)
• update to avoid an additional closure (5e40bdf)
• drop all pre-ES2015 support (d938fc5)
• add formatting (fc61021)
• add recommended lint configuration (b6d56d5)
• refactor and improve unit tests (b31fae1)
• add test for issue (0ed9d0c)
• inline react element check (3379d47)
• update gzip size (17c4654)
• clean up typing and filenames (acbb8f3)
• flatten checks in map / set (ea912a3)
• remove unused support variables (d2a8d45)
• get tests passing enough to get publish process working (need to clean up) (3dcb4c8)
• remove old source (cf5a642)
• reducing nesting improves performance! (cf089ee)
• restore createCustomEqual to original contract (74c90d6)
• improve performance (d30414a)
• initial implementation (038c682)