Added VERSIONS.md

Author: aisrael

VERSIONS.md

@@ -0,0 +1,58 @@
+# datu Version Notes
+
+## v0.3.0
+
+Compare range: `0.2.4...0.3.0`
+
+### Highlights
+
+- Added an interactive REPL mode: running `datu` without a subcommand now starts an interactive pipeline shell.
+- Added CSV input support across key commands: `convert`, `count`, `schema`, `head`, and `tail`.
+- Refactored the pipeline engine toward an async/DataFusion DataFrame-based architecture for cleaner composition and execution.
+- Expanded test coverage with new REPL feature tests and reorganized CLI feature tests.
+
+### New Features
+
+- **Interactive REPL**
+  - New REPL entrypoint and parser/evaluator flow.
+  - Supports pipeline-style expressions (for example: `read("input.parquet") |> select(:id, :email) |> write("output.csv")`).
+  - Added REPL integration tests and feature scenarios.
+
+- **CSV as a first-class input format**
+  - CSV can now be read by:
+    - `datu convert`
+    - `datu count`
+    - `datu schema`
+    - `datu head`
+    - `datu tail`
+  - Added `--has-headers[=bool]` to control CSV header handling.
+
+### Improvements
+
+- **Pipeline refactor**
+  - Introduced and reworked modules for datasource and I/O concerns (`dataframe`, `datasource`, `read`, `write`, `select`).
+  - Async pipeline execution improvements and clearer separation of responsibilities.
+
+- **Documentation**
+  - README expanded with command usage updates, CSV examples/options, and REPL usage examples.
+
+- **Project metadata**
+  - Added MIT `LICENSE`.
+  - Updated CI/config and dependencies for new runtime/testing capabilities.
+
+### Breaking / Behavioral Changes
+
+- Running `datu` with no subcommand now launches the REPL.
+- Commands that now accept CSV input may behave differently based on `--has-headers` (defaults to `true` when omitted).
+
+### Testing
+
+- CLI feature scenarios reorganized under `features/cli/*`.
+- New REPL feature files and integration tests (`tests/repl.rs`).
+
+### Changelog Stats
+
+- 10 commits
+- 46 files changed
+- 5374 insertions
+- 698 deletions