• Add h3_get_extension_version()
• Add hash operator class, now WHERE IN works
• ⚠️ Replace h3_basecells with h3_get_res_0_indexes
• ⚠️ Rename all functions with double h3_h3_ prefix to use single h3_ prefix
• ⚠️ Remove h3_haversine_distance function
• ⚠️ Change Makefile such that the h3 core library is cloned, built and statically linked
• Test that upgrade path has same result as fresh install