time-util 0.3.0

A crate providing miscellaneous functionality for working with time stamps.
0.3.0
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- Use `chrono-tz` for time-zone aware conversions
  - Removed custom time-zone logic


0.2.0
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- Added support for parsing a time stamp from a date string
- Added support for serializing a time stamp for a given time zone
- Added support for rudimentary time calculations
- Split crate into three modules: `math`, `parse`, and `serde`
  - Each has to be opted-in with the corresponding feature flag


0.1.0
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- Initial release