Liesel v0.2.9

• 🚧 Pinned scipy version to <=1.12 (@jobrachem)
• 🚧 Handeled error in liesel.model.model.transform for duplicated nodes (#167, @GianmarcoCallegher)
• ✨ lsl.Calc nodes will now try to evaluate their function upon initialization. This can make it much easier to spot errors early. The behavior can be turned off by passing update_on_init=False. (#92, @jobrachem)