Improvements:

• core: Add Vagrant.version? helper method
• core: Scrub sensitive values from logger output
• core: Prevent multiple evaluations of Vagrantfile
• command/init: Support VAGRANT_DEFAULT_TEMPLATE env var
• contrib/bash: autocomplete running VM names for destroy subcommand
• guest/debian: Use sudo to determine if systemd is in use for hardened systems
• guest/openbsd: Add IPv6 network template for OpenBSD machines

Bug fixes:

• core: Fix Vagrant.has_plugin? behavior before plugins are initialized
• core: Check verify_host_key for falsey or :never values when generating ssh config
• guest/linux: Filter out empty strings and loopback interfaces when constructing list of network interfaces

• Install locally and confirmed version
• Run with a few local projects, including usage of vagrant up, destroy, init and provision