fixed huge declaration file (#28) 

Native assert (#27) * dropped chai dependency in favor of own `expect` implementation

added `to satisfy` validation to verify user-defined expectation prov… …ided as predicate (#26)

added capability to pass `softly` prefix and throw `SoftAssertionErro… …r` (#23)

added capability to pass `soft` flag and throw `SoftAssertionError` (#22 )

added capability to pass _to_ suffix (e.g _equal to_) (#20) 

added source maps (#19) 

improved error message if poll promise is not resolved in time (#18) 

added generic poll validation (#17) 

improved ajv reporting (#16)