Upgrading from 0.11 was relatively painless, except for nvim-treesitter, which pretty much became a new plugin. The previous version lives in the master branch, but doesn't support 0.12 at all, so you need to use the main branch when updating.

Most of the previous features are replicable with new code, except for incremental selection. treesitter-modules[1] serves as a good bridge between old and new APIs.

[1] https://github.com/MeanderingProgrammer/treesitter-modules.n...