Jiff conversions

[jessekrubin]

This pull request includes several updates to the project, including new version changes, additions to the workspace members, and numerous documentation updates. The most important changes are:

Version and workspace updates:

• Updated the project version to 0.0.19 and added ryo3-regex to the workspace members in Cargo.toml. [1] [2]

Documentation updates:

• Added a new version entry for v0.0.19 in CHANGELOG.md with detailed changes for various Jiff types.
• Corrected a typo in README.md by changing TimespanTypedDict to TimeSpanTypedDict.
• Added numerous method and property definitions to the Duration and FsPath classes in README.md. [1] [2]
• Added missing method definitions and properties for various classes and functions in README.md, including Glob, GlobSet, Globster, and hashing functions. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22]

[cloudflare-workers-and-pages]

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