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| # Changelog | ||
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| All notable changes to the Colang language and runtime will be documented in this file. | ||
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| The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html). | ||
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| ## [2.0-beta.2] - Unreleased | ||
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| This second beta version of Colang brings a set of improvements and fixes. | ||
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| ### Added | ||
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| Language and runtime: | ||
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| * [#504](https://github.com/NVIDIA/NeMo-Guardrails/pull/504) Add colang 2.0 syntax error details by @rgstephens. | ||
| * [#533](https://github.com/NVIDIA/NeMo-Guardrails/pull/533) Expose global variables in prompting templates. | ||
| * [#534](https://github.com/NVIDIA/NeMo-Guardrails/pull/534) Add `continuation on unhandled user utterance` flow to the standard library (`llm.co`). | ||
| * [#554](https://github.com/NVIDIA/NeMo-Guardrails/pull/554) Support for NLD intents. | ||
| * [#559](https://github.com/NVIDIA/NeMo-Guardrails/pull/559) Support for the `@active` decorator which activates flows automatically. | ||
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| Other: | ||
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| * [#591](https://github.com/NVIDIA/NeMo-Guardrails/pull/591) Unit tests for runtime exception handling in flows. | ||
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| ### Changed | ||
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| * [#576](https://github.com/NVIDIA/NeMo-Guardrails/pull/576) Make `if` / `while` / `when` statements compatible with python syntax, i.e., allow `:` at the end of line. | ||
| * [#596](https://github.com/NVIDIA/NeMo-Guardrails/pull/596) Allow `not`, `in`, `is` in generated flow names. | ||
| * [#578](https://github.com/NVIDIA/NeMo-Guardrails/pull/578) Improve bot action generation. | ||
| * [#594](https://github.com/NVIDIA/NeMo-Guardrails/pull/594) Add more information to Colang syntax errors. | ||
| * [#599](https://github.com/NVIDIA/NeMo-Guardrails/pull/599) Runtime processing loop also consumes generated events before completion. | ||
| * [#540](https://github.com/NVIDIA/NeMo-Guardrails/pull/540) LLM prompting improvements targeting `gpt-4o`. | ||
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| ### Fixed | ||
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| * [#525](https://github.com/NVIDIA/NeMo-Guardrails/pull/525) Fix string expression double braces. | ||
| * [#531](https://github.com/NVIDIA/NeMo-Guardrails/pull/531) Fix Colang 2 flow activation. | ||
| * [#577](https://github.com/NVIDIA/NeMo-Guardrails/pull/577) Remove unnecessary print statements in runtime. | ||
| * [#593](https://github.com/NVIDIA/NeMo-Guardrails/pull/593) Fix `match` statement issue. | ||
| * [#579](https://github.com/NVIDIA/NeMo-Guardrails/pull/579) Fix multiline string expressions issue. | ||
| * [#604](https://github.com/NVIDIA/NeMo-Guardrails/pull/604) Fix tracking user talking state issue. | ||
| * [#598](https://github.com/NVIDIA/NeMo-Guardrails/pull/598) Fix issue related to a race condition. | ||
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| ## [2.0-beta] - 2024-05-08 | ||
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| ### Added | ||
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| - [Standard library of flows](https://docs.nvidia.com/nemo/guardrails/colang_2/language_reference/the-standard-library.html): `core.co`, `llm.co`, `guardrails.co`, `avatars.co`, `timing.co`, `utils.co`. | ||
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| ### Changed | ||
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| - Syntax changes: | ||
| - Meta comments have been replaced by the `@meta` and `@loop` decorators: | ||
| - `# meta: user intent` -> `@meta(user_intent=True)` (also user_action, bot_intent, bot_action) | ||
| - `# meta: exclude from llm` -> `@meta(exclude_from_llm=True)` | ||
| - `# meta: loop_id=<loop_id>` -> `@loop("<loop_id>")` | ||
| - `orwhen` -> `or when` | ||
| - NLD instructions `"""<NLD>"""` -> `..."<NLD>"` | ||
| - Support for `import` statement | ||
| - Regular expressions syntax change `r"<regex>"` -> `regex("<regex>")` | ||
| - String expressions change: `"{{<expression>}}"` -> `"{<expression>}"` | ||
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| - Chat CLI runtime flags `--verbose` logging format improvements | ||
| - Internal event parameter renaming: `flow_start_uid` -> `flow_instance_uid` | ||
| - Colang function name changes: `findall` -> `find_all` , | ||
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| - Changes to flow names that were previously part of `ccl_*.co` files (which are now part of the standard library): | ||
| - `catch colang errors` -> `notification of colang errors` (core.co) | ||
| - `catch undefined flows` -> `notification of undefined flow start` (core.co) | ||
| - `catch unexpected user utterance` -> `notification of unexpected user utterance` (core.co) | ||
| - `poll llm request response` -> `polling llm request response` (llm.co) | ||
| - `trigger user intent for unhandled user utterance` -> `generating user intent for unhandled user utterance` (llm.co) | ||
| - `generate then continue interaction` -> `llm continue interaction` (llm.co) | ||
| - `track bot talking state` -> `tracking bot talking state` (core.co) | ||
| - `track user talking state` -> `tracking user talking state` (core.co) | ||
| - `track unhandled user intent state` -> `tracking unhandled user intent state` (llm.co) | ||
| - `track visual choice selection state` -> `track visual choice selection state` (avatars.co) | ||
| - `track user utterance state` -> `tracking user talking state` (core.co) | ||
| - `track bot utterance state` -> No replacement yet (copy to your bot script) | ||
| - `interruption handling bot talking` -> `handling bot talking interruption` (avatars.co) | ||
| - `generate then continue interaction` -> `llm continue interaction` (llm.co) | ||
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| ## [2.0-alpha] - 2024-02-28 | ||
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| [Colang 2.0](https://docs.nvidia.com/nemo/guardrails/colang_2/overview.html) represents a complete overhaul of both the language and runtime. Key enhancements include: | ||
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| ### Added | ||
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| - A more powerful flows engine supporting multiple parallel flows and advanced pattern matching over the stream of events. | ||
| - A standard library to simplify bot development. | ||
| - Smaller set of core abstractions: flows, events, and actions. | ||
| - Explicit entry point through the main flow and explicit activation of flows. | ||
| - Asynchronous actions execution. | ||
| - Adoption of terminology and syntax akin to Python to reduce the learning curve for new developers. |
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