• update dependencies, including security updates in libraries

[8.3.2]

• minor fixes and enhances
• update dependencies
• while using async HTTP client, you could miss some Throwables, now they will be thrown

• fix java.lang.NoClassDefFoundError for non-java8 runtimes (e.g. Android 7.1.1)
  (thanks to https://github.com/ChristopherGittner)

• add Instagram (https://www.instagram.com/) API (thanks to https://github.com/faent)
• add getErrorMessage method to FacebookAccessTokenErrorResponse. Should be used instead of general getMessage method
  from the parent Exception

• add ScopeBuilder to easily specify multiple scopes while requesting OAuth2.0 Access Tokens
• make Base64 en/de-coding not dependent from java8 implementation (use three optional implementation
  (internal java 8+, Apache Commons Codec, JAXB) detected in runtime) (thanks to https://github.com/CodingFabian)
• implement possibility to add extra parameters to Access Token Request
  (AccessTokenRequestParams#*ExtraParameters methods), #980
  (thanks to https://github.com/pmorch)

• add raw Response (with HTTP response code and body) as member to the OAuth2AccessTokenErrorResponse
• add possibility to set "" (empty string) as apiSecret
• add Slack API (https://slack.com/) (thanks to https://github.com/petrkopotev)

• add Kakao API (https://kakao.com/) (thanks to https://github.com/v0o0v)
• support chunks in JDKHttpClient's Multipart (thanks to https://github.com/eos1d3)
• add support for OAuth 2.0 Device Authorization Grant (RFC 8628) (thanks to https://github.com/rebarbora-mckvak)
• update Google API URLs

• add Proxy support (via config's option) to internal JDKHttpClient (thanks to https://github.com/bjournaud)
• fix typo (change "Verfier" to "Verifier") (thanks to https://github.com/afkbrb)
• fix Multipart support in JDKHttpClient (thanks to https://github.com/eos1d3)

• Add Polar API (https://www.polar.com/) (thanks to https://github.com/vidi42)
• make Response accept resources to autoclose and autoclose it (thanks to https://github.com/drei01)
• fix url encoding in POST payload (it's needed for 'application/x-www-form-urlencoded' Content-Type)
  • unit tests (thanks to https://github.com/max904-github)
• Add Armeria HTTP client (thanks to https://github.com/max904-github)