Extended Acceleration Gravity units to cover range from Nano to Tera. Added Length units for Earth Radius, Solar Radius, Jupiter Radius along with appropriate SI prefix sets for each unit. Corrected Femto and Pico Gram definitions in Mass. Added Solar Mass, Earth Mass, and Jupiter Mass Along with appropriate SI prefix sets for each unit. Change Temperature to generate arithmetic methods as I need them for some of the functionality in applications that use the library. Extend the TempratureDelta subtraction operator to handle a right operator of Temperature.

Changes to support handling for use in reasonable editor pages that need to have abbreviations that do not include the "degrees" symbol that is not on most keyboards.

Change to support stellar scale units, use in .Net core relationships that require classes rather than structures, additional static properties, better ToString format handling and additional testing.

Current working state of my extended version of UnitsNet with drasticly increased scale for units.

Initial set of units added and pass tests.

Update README.md

Initial commit