3.1.2

This release fixes a regression in 3.1.1. Please update as soon as possible.

Added

• The -c / --clean flag for -A. After a package's tarball has been built
  and copied to the package cache, delete its build directory immediately. By
  default, build directories are left in /tmp to be cleaned by the OS, but for
  users who don't restart their machines often, this can clog up disk space.

Fixed

• Apologies to Aura users. The -E change in the previous release caused a
  lot of unexpected behaviour, so that change has be revoked. A future version
  of Aura will explore a better solution for handling environment variables.