This bundle is used to integrate the Money library (https://github.com/mathiasverraes/money) into a Symfony project. This library is based on Fowler's Money pattern (https://verraes.net/2011/04/fowler-money-pattern-in-php/)
Maybe problem will arise is userland code (as this is just require-dev). A follow up PR should tackle the problems and solve the problems.
But i guess after the other big PRs are merged.
We never had real doctrine/orm 3 support anyway but this started to break after the release of version 3 as noted here: https://github.com/TheBigBrainsCompany/TbbcMoneyBundle/issues/164