:mega: ktor `1.2.3` has been published * JS webso...

# ktor

[cy]

📣 ktor 1.2.3 has been published

* JS websocket bugs fixes and improvements
* Eliminated Java9's Base64 implementation (useful for older JDK and Android)
* Fixed bug of adding unexpected trailing slash (#1201) (#1206)
* Improved apache and okhttp client engines performance
* Fixed client response body cancellation
* Added client response streaming on nodejs
* Deprecated old client BasicAuth
* Introduced a flag to send auth without negotiation
* Added server kotlinx.serialization initial support (SerializationConverter)
* Client TLS implementation fixes: cancellation and error handling.
* Added web assembly content type.
* Prohibited server double request content call.receive.
* Introduce DoubleReceive feature that makes it work.
* Server CORS support fixed and improved
* Added initial kotlinx.serialization support for server including receiving generic collections.
* Introduced ktor-bom for better dependency management.
* Improved jetty server engine configuration to enable manual connectors setup.
* Fixed client memory leak (#1223).
* Upgraded Jetty, Netty and utility libraries.
* Kotlin 1.3.41


⚠️ Breaking changes/Migration steps:
* CORS doesn’t allow non-simple request body content types anymore by default
* to allow extra content types such as json, enable allowNonSimpleContentTypes
* At least Kotlin 1.3.41 IS REQUIRED

[darkmoon_uk]

Our gratitude to the whole Ktor team; another solid iteration 👏 K