version bump

Merge pull request php-amqplib#963 from php-amqplib/php81

fix deprecation notice from stream_select() on PHP8.1

3.1.0 changelog

php-amqplib 3.0.0

php-amqplib 3.0.0-rc2

php-amqplib 3.0.0-rc1

replace conditional phpseclib aliases with defined classes, support a…

…utoloader class maps

php-amqplib 2.12.2

php-amqplib v2.12.1

php-amqplib v2.12.0