Adding upstream version 0.12.0.

Signed-off-by: Daniel Baumann <daniel@debian.org>

pyproject.toml

@@ -0,0 +1,81 @@
+[tool.poetry]
+name = "textual-fastdatatable"
+version = "0.12.0"
+description = "A performance-focused reimplementation of Textual's DataTable widget, with a pluggable data storage backend."
+authors = ["Ted Conbeer <tconbeer@users.noreply.github.com>"]
+license = "MIT"
+readme = "README.md"
+packages = [
+    { include = "textual_fastdatatable", from = "src" },
+]
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
+
+
+[tool.poetry.dependencies]
+python = ">=3.9,<3.14"
+textual = ">=0.89.1"
+pyarrow = ">=16.1.0"
+polars = { version = ">=0.20.0", optional = true } 
+tzdata = { version = ">=2023", markers = "sys_platform == 'win32'" } # arrow timestamptz support on windows
+
+[tool.poetry.extras]
+polars = ["polars"]
+
+[tool.poetry.group.dev.dependencies]
+pre-commit = "^3.3.1"
+textual-dev = "^1.0.1"
+pandas = "^2.1.1"
+numpy = "^1"
+pyinstrument = "^5"
+
+[tool.poetry.group.static.dependencies]
+ruff = "^0.5"
+mypy = "^1.10.0"
+pandas-stubs = "^2.1.1"
+
+[tool.poetry.group.test.dependencies]
+pytest = "^7.3.1"
+pytest-asyncio = ">=0.21,<0.24"
+pytest-textual-snapshot = ">=0.4.0"
+polars = ">=0.20.0"
+
+
+[tool.ruff]
+target-version = "py39"
+
+[tool.ruff.lint]
+select = ["A", "B", "E", "F", "I"]
+
+[tool.mypy]
+python_version = "3.9"
+files = [
+    "src/**/*.py",
+    "tests/unit_tests/**/*.py"
+]
+mypy_path = "src:stubs"
+
+show_column_numbers = true
+
+# show error messages from unrelated files
+follow_imports = "normal"
+
+# be strict
+disallow_untyped_calls = true
+disallow_untyped_defs = true
+check_untyped_defs = true
+disallow_untyped_decorators = true
+disallow_incomplete_defs = true
+disallow_subclassing_any = true
+strict_optional = true
+
+warn_return_any = true
+warn_no_return = true
+warn_redundant_casts = true
+warn_unused_ignores = true
+warn_unused_configs = true
+
+no_implicit_reexport = true
+strict_equality = true