Cassandre trading bot framework 5.0.7 released

Happy new year!

Here is Cassandre 5.0.7, these are the main changes:

• 850 - Fix fees management in GainDTO (getFees() now deprecated).

• 846 - Manage currency precision error in position management.

• 839 - Increase the maximum value of volume.

• 833 - Make Repositories extends JpaSpecificationExecutor.

• Move to spring-boot 2.6.x.