Updating text components to the new Snapshots

Hiiii! My datapack, Arcana (which I now finally have time to work on), uses tons and tons of text, in lore, item modifiers, title commands, etc. I heard that text has been turned from JSON to NBT format in the latest snapshots (which I would like to update to sooner rather than later), and I have a few questions: - How do I convert text from JSON to NBT? What is the new format? - A lot of my text comes from macros using custom data strings. Will I have to make any changes to the way that the custom data is written? - Are there any other major breaking changes I should know about? Any help would be appreciated. Thanks! :3