=================
buildstream 1.5.1
=================

  o Support `buildstream1.conf` as well as `buildstream.conf` for
    parallel installations.

  o Lazy resolution of variables, this allows junctions to use variables
    without requiring the project to have fully resolved variables, while
    still reporting the right error messages if a junction uses unresolved
    variables.

  o Fix an issue where conditional statements were being lost instead of
    processed at include time, only when the include happens in project.conf

  o Backport some artifact cache related structural changes, and allow
    BuildStream 1 clients to interface with BuildStream 2 remote asset
    caches, while still allowing BuildStream 1 to interface with its own
    bst-artifact-server implementation.

  o Added sandbox configuration for `os` and `architecture` to mirror
    the added options in BuildStream 2, fixing issue #523.