Connor

> @connorhu would you extract the removal of the Version tag into its own PR? This way we can have a more focused (and reduced) changeset 👍 Sorry, I don't...

`php-cs-fixer 403: rate limit exceeded` ☹️

I studied some how-tos and changed my mind. For phpunit testing we will also prefer phar based installs. The composer/script section shows which version is preferred. This can be expanded...

> > I would suggest to use phive to install the phar files. We could just ship the '.phive/phive.xml' file in the repo, where versioning is done there. > >...

I have some concerns about this tool. It can do some things but it's a bit awkward to use. - phars xml undocumented, no xsd - writes the installed version...

> [sf1] Slow test suite, almost one hour to run all tests for all versions. How much faster would parallel testing be?

I will give a try to paratest. I've never used it, I wonder how much faster it is.

`UnusedVariableRule` can do this, i guess.

If the test folder were not a mess, I would put the baseline file there.

> the baseline is quite big, we should use the php format of the baseline to improve performances in the analysis > > hint: just generate the baseline with .php...