v0.2.1

Changelog

faa3417 allow empty save to contact and save result
31a7ae7 Add URL encoding, ignore SSL errors on webhooks
eed36fd Add default support for ISO without seconds, fix array_length for json slices
fa9f20c Make sure we can stringify all UUIDs, context vars for flow
a4ccf76 tweak examples
e62727d Add to_json and from_json excellent, tests for POST webhooks and var substitution

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Automated with @goreleaser
Built with go version go1.8 linux/amd64