v0.3.0

What's Changed

• 196 remove need for structs to implement stringchars by @matt-beanland in #197
• reduced advertised capability, fixed calculations by @matt-beanland in #198
• refactored transformers as persisters, split DataLayer and Resource Info by @matt-beanland in #201
• updated deps and reinstated keyword tests by @matt-beanland in #204
• fixed persister and improved verifier to verify all labels by @matt-beanland in #205
• added encoding test and fixed json_encode for map by @matt-beanland in #207
• added defensive casting, returning error tuple by @matt-beanland in #209
• expression calculations in memory by @matt-beanland in #210

Full Changelog: v0.2.15...v0.3.0