Deprecation warnings: Cycle Unified

[kristianmandrup]

Looks like dependencies have not been updated to support Cycle Unified
Please fix. Thanks.

npm WARN deprecated @cycle/xstream-run@4.2.0: no longer supported. see release notes for Cycle Unified
npm WARN deprecated @cycle/xstream-adapter@3.1.0: no longer supported. see release notes for Cycle Unified
npm WARN deprecated @cycle/base@4.2.0: no longer used. see release notes for Cycle Unified