Support & require v4 of the extension which supports & requires PHPStan 2.0

https://github.com/spaze/phpstan-disallowed-calls/releases/tag/v4.0.0

Support v3 of the extension

https://github.com/spaze/phpstan-disallowed-calls/releases/tag/v3.0.0

Suggest adding to require-dev

• If running composer require without the --dev option, prompt users if they would like to add these packages to require-dev instead of require (#5)

Support PHPStan 1.0

Support PHPStan 1.0 by supporting spaze/phpstan-disallowed-calls 2.0 (#4)

Hello world

First version marking these as disallowed:

• dump()
• dumpe()
• bdump()
• Tracy\Debugger::dump()
• Tracy\Debugger::barDump()