v2.5.0 Prerelease 1

Bugfixes

• fix snapshot-related commands versions, commit and tag (#171)
• fix pip handling when env.sh has not explicitely been loaded.
• fix checking out a git-backed package with submodules when there is a tag, commit or a different branch than master
• make sure the git importer actually updates the references in remotes/

New/changed experimental CLI Commands

These commands have been created to support the integration of autoproj-based workspaces (a.k.a. Rock) in VSCode. See https://github.com/rock-core/rock-vscode

• the --tool option now summarizes the errors at the end
• exec: run a workspace executable, without needing to load env.sh first. E.g. $WORKSPACE_ROOT/.autoproj/bin/autoproj exec syskit run -rgazebo
• which: resolves an executable within the workspace's PATH, without loading env.sh first
• watch: auto-update the env.sh and cache files that are used by exec and which. This speeds up exec and which noticeably.