v0.22.0

Release notes

Changed

• Remove self-detection of Docker environment (introduced in v0.21.0) and add support for
  EAST_DONT_USE_TOOLCHAIN_MANAGER environment variable. If this variable is set to 1,
  East will not try to use the toolchain manager, but will pass the commands directly to the
  system provided West.
  The rationale for this change is that some Docker environments don't provide all tools/commands
  and East should use toolchain-manager in that cases. That case is our current CI environment,
  where we just install East and want it to manage the tooling. But some Docker environments
  will provide all tools, including East, so East should just use them directly.
  But there is no way to detect this automatically, so we need to provide a way for the user to
  tell East what to do. This is done with the EAST_DONT_USE_TOOLCHAIN_MANAGER environment
  variable.