Release v0.3.1: Enhanced Polars Data Type Mapping

Patch release enhancing the Polars data type mapping functionality.

Enhancements:
- Comprehensive DataFrame examples demonstrating all Polars data types
- 12 detailed examples covering basic, complex, and nested types
- Visual verification of abbreviated data types in table output
- Enhanced demo with both full and abbreviated type displays
- Improved documentation and testing coverage

New Examples:
- Basic types (String, Int32, Float64, Boolean, Date)
- Date/time types (Date, Datetime<ns>, Time, Datetime<ns, UTC>)
- List types (List<Float64>, List<String>, List<Int64>)
- Array types (Array<Float64, 3>, Array<Int64, 3>)
- Struct types with complex field definitions
- Nullable types (Int64?, Float64?, Boolean?)
- Decimal types (Decimal(10, 2), Decimal(38, 9))
- Duration types (Duration<ns>)
- Categorical and Enum types
- Nested complex types (List<List<Int64>>, List<Struct<...>>)

All data types now properly display abbreviated forms in table output.

Release 1.8.94: Rust crate version bump

Rust crate version bump to 1.8.94 to align with tidy-viewer-core.
This version includes all the data type mapping functionality from v0.3.0.

fix: NA values now properly colored in formatted output

- Updated NA detection logic to use is_na_string_padded() instead of is_na() for formatted strings
- Fixed NA value coloring in both CLI and Python bindings
- NA values now properly use the selected color palette across all interfaces
- Bumped version to 1.8.93

feat: bump version to 1.8.92 across all packages

feat: bump version to 1.8.91 across all packages

fix: remove Homebrew Core PR creation step as requested by user

feat: bump version to 1.8.8 across all packages

Release v1.8.7 - Modern GitHub Actions and Release Workflow

Release v1.8.6 - Version Bump and Workflow Fix

Release v1.8.5 - Version Bump and Workflow Fix