feat: support Gatsby 5.x (#245)

BREAKING CHANGE: Requires Node >=18.0.0
BREAKING CHANGE: Requires Gatsby ^5.0.0

fix: fix export (#225)

fix: fix export

chore: add `.nvmrc`

feat: support Gatsby 3.x (#179)

BREAKING CHANGE: Requires Node >=12.13.x
BREAKING CHANGE: Requires Gatsby ^3.x

tests: add extra kitchensink test

feat(Testing Playground): Add support for Testing Playground (#124)

fix(Instagram): Update Instagram oEmbed endpoint (#148)

BREAKING CHANGE: You'll now need to pass a required `accessToken` option whenever you're using the Instagram service. Check out the Instagram oEmbed access token docs and requirements to know how to get this.

fix(Twitch): Fix Twitch embed (#131)

BREAKING CHANGE: You'll now need to pass a required `parent` option whenever you're using the Twitch service
BREAKING CHANGE: Twitch embeds can only be embedded on HTTPS websites. Check out the Gatsby docs for setting this up when developing locally.

fix(CodeSandbox): Update sandbox config

fix(CodeSandbox): Update allow & sandbox config