Removes old Vagrant triggers, we can't keep supporting every Vagrant version since 2010.
Instructs the user to switch from hostsupdater to goodhosts plugin. It's almost the same but maintained and hostsupdater has some major issues (might be impossible to uninstall for example).
Add "version" at the top of Vagrantfile. It will be temporarily used to detect outdated Vagrantfile.
Set wordpress-beta temporarily as the default since most people use it and wordpress box hasn't been updated in over 2 years.
composer installerrors (issue in another repository).wordpress-betatemporarily as the default since most people use it andwordpressbox hasn't been updated in over 2 years.