v2.0.0-rc5

• Fixed several clippy lints.
• Removed several unnecessary calls to unwrap().
• Added documentation for:
  • HTU* driver,
  • AnySensor and MeasurementResults,
  • battery driver,
  • brownout manager driver,
  • error module,
  • gpio module.
• Invalid values of the FFI enum esp_reset_reason_t will be converted to ResetReason::Unknown instead of calling unreachable!().
• Fixed typos in README and comments.
• Removed unnecessary conversions between integer/Decimal/etc. types in the battery driver.
• Made ResetReason::is_abnormal() a const fn.
• Enabled clippy warnings for using unwrap().
• Fixed handling of missing partition metadata.
• Added error handling to ADC initialization.
• Default to WPA2 if an AP does not have an authentication method defined.
• Replaced PartialOrd with Ord in network filter #2.
• Updated pwmp-client to 2.0.3.
• Added custom panic handler with error reporting.
• Added PartialEq and Eq implementations for ResetReason.
• Added more debug messages.

Full Changelog: v2.0.0-rc4...v2.0.0-rc5