version 2.0.0

[StableLlama]

• Critical change that ensures reliablity and should have no bad side
  effects, but when you see any, please report:
  DICT, LIST, SET and Data List nodes (plus the DICT/LIST-taking STRING nodes)
  now degrade gracefully when their data source is not connected (None) instead
  of raising: read/query nodes return their natural "no data" result (the get
  default, an empty list, False, 0, None), and transform nodes behave as if
  given an empty container.
• Add a "continue if not empty" flow-control node: it passes a value through
  unchanged when it is non-empty, and blocks execution (via an execution blocker)
  when the value is empty. It is list-aware (INPUT_IS_LIST / OUTPUT_IS_LIST),
  so it is immune to ComfyUI's empty-input batching crash and passes data lists
  through unchanged. By default the block is silent; an optional message can be
  set to show a dialog. Use it before nodes that cannot handle an empty input
  (e.g. a node receiving an empty Data List) to stop execution instead of failing.
• "save IMAGE to file" and "save IMAGE+MASK to file": format is now a dropdown
  (still connectable as a STRING) whose entries are derived from the formats the
  installed Pillow/image plugins can actually write (RGB node offers them all,
  IMAGE+MASK only alpha-capable ones); every batch frame is written instead of
  only the first; and path can be switched to ComfyUI-style filename_prefix
  mode via a toggle, resolved through ComfyUI's own folder/file helpers
  (auto-numbered under the output dir); both modes accept ComfyUI templates such
  as %date:yyyy-MM-dd%
• add create DICT and LIST from JSON string