treat default of supported_as_column as true in dialect (#56)

* treat default of supported_as_column as true in dialect

feat: Add Match() and MatchAt() to FunctionVariant (#54)

* Also fixed default nullability for ScalarFunctionImpl

feat(type): Add support for interval compound literal (#44)

* feat(type): Add support for interval compound literal

* Fix pre-commit errors and rename test case

* Address review comments

* Address review comments

* Address review comments

* Address review comments

feat: Add convenience literal APIs (#47)

* Introduce literal package

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Co-authored-by: Jacques Nadeau <jacques@apache.org>

feat(type): add support for type PrecisionTimestamp and PrecisionTime…

…stampTz (#41)

feat(plan) Introduce rewrite tools on Rel. (#29)

Add GetInputs, Copy, CopyWithExpressionRewrite to plan.Rel interface

fix(expressions): Use compound names in protobufs (#24)

* Add expression plan roundtrip test

* Use compound names for variants, and keep simple and compound names separate

* Do not add the same URI twice

* Update tests - protobufs should refer to compound names

* Output extensions in anchor order

* Use type parser to parse types

fix(builders): Updated Remap functions to test correct output mapping (…

…#22)

feat(plan): Plan builders (#21)

* feat(plan): plan and relation representations

* chore(docs): update readme

feat(expr/builders): Add initial expression builder helpers (#20)

* feat(expr/builders): Add initial expression builder helpers.

* export FuncArgBuilder

* add one to type variation anchors