1.15.0

What's Changed

• Remove Datadog exporter code. by @nachoBonafonte in #725
• Prevent async requests from hanging when not instrumented by @batuhansk in #728
• add support for setting exemplar filter by @angelodipaolo in #731
• Fix gauge crash by @bryce-b in #734
• add trace-based exemplar filter by @angelodipaolo in #737
• Fix exception.type when recording Swift Errors by @ArielDemarco in #743
• Release 1.15.0 by @bryce-b in #745

Full Changelog: 1.14.0...1.15.0