v. 1.3.2

• Fixes an error in nix-tool which was opening files in ReadWrite mode which made it impossible to dump files from previous format versions.
• Introduces a File::flush() method to flush the file at any time to avoid data loss when an application crashes.

windows: download one of the installers below
linux: use our launchpad ppa (ppa:gnode/nix) to install with apt-get on trusty and xenial
macOS: install via homebrew