v1.2.2

• --xp.debug.catch_post_mortem flag now works externally as well
• Fixed a problem with init_transforms that affected optim.decay_to_init
• Further removed deprecated summaries protocol
• Fixes regarding grain workers and non-thread-safe imports such as einops
• Lifted jit restriction for merging auto_state.sum_field
• Added support for ImmutableDict inside konfig
• Added ShowTexts summary
• Make grain an optional dependency on Windows
• Reduced logging noise
• Several other minor bugfixes