AuditReader: Use interface typehint for entityManager
AuditReader: Use interface typehint for entityManager

Ref #149
SanderVerkuil/EntityAuditBundle,platosinski/EntityAudit,dave-redfern/EntityAudit,platosinski/EntityAudit,SanderVerkuil/EntityAuditBundle,artursvonda/EntityAudit,artursvonda/EntityAudit,dave-redfern/EntityAudit,platosinski/EntityAudit,artursvonda/EntityAudit,SanderVerkuil/EntityAuditBundle