Version 2.1.1 - Fix encoding to allow code length of 2

NuGet Package Release: https://www.nuget.org/packages/OpenLocationCode/2.1.1

Release Notes

• Fix codeLength validation in Encode() to allow length of 2 (previously minimum of 4)
• Add more test cases for valid and invalid code lengths

Thanks @brewmanz

Version 2.1.0 - Fix Floating Point Precision Errors

NuGet Package Release: https://www.nuget.org/packages/OpenLocationCode/2.1.0

Release Notes

• Implemented a new algorithm for Encode() and Decode() that uses 64-bit integer arithmetic to avoid floating point precision errors.
  • The original algorithm used floating point arithmetic which caused precision issues as discussed in Issue google/open-location-code#307.
• The CodeArea class was improved without any breaking changes
  • Added the CodeLength property as the length of the decoded Open Location Code.
  • Add new publicly accessible GeoArea class which now contains the generic area properties and methods and is extended by CodeArea.
  • The CodeArea constructor is still not publicly accessible to ensure that all CodeArea instances represent a valid OLC area.
• The unit tests were improved to read and parse the test_data CSV files from the original open-location-code project.
  • The encoding.csv and decoding.csv TestData files also include new test cases for these changes.
  • No unit tests or test cases were removed (only added).

Version 2.0.0

NuGet Package Release: https://www.nuget.org/packages/OpenLocationCode/2.0.0

Release Notes:

• Now fully compliant with API spec through the static methods.
• Avoid throwing InvalidOperationException with improved class structure.
  • OpenLocationCode class now only accepts valid full codes and the OpenLocationCode.ShortCode class was added for valid short codes.
  • The Shorten() instance method returns a new ShortCode instance which has the RecoverNearest() method to recover back to OpenLocationCode.
• Added CodeDigits property to OpenLocationCode class to get only the code digits as a more concise representation of the full code and can be passed to the constructor to be normalized back into a valid full code.
• Removed the nonstandard Parent() method.
• Fixed bug with validation of separator position (PR google/open-location-code#272)
• Fixed bug with validation of short codes with padding (Issue google/open-location-code#273)
• Renamed project directories to use dot . separator between namespaces like OpenLocationCode.Test
• XML documentation comments were added and improved.
• Unit tests were added and improved.
• README was updated to include a description, usage, and link to API reference