Release v0.7.0

New Features

• update command — blocks update <package>[@version] updates an installed
  package. With no version it proposes the highest release within the installed
  major version; a specific version (including a downgrade) can be requested with
  @<version>.
• Conflict points to update — installing a package at a version different
  from the one already installed now suggests the update command instead of just
  reporting a conflict.
• Dependency-aware uninstall — uninstall now warns when other installed
  packages still depend on the one being removed, and asks for confirmation before
  removing it.

Improvements

• Comma-separated platform keys — a manifest can list several platforms in a
  single key (e.g. Win64,Linux64) to apply the same settings to all of them.