EvalEx 3.1.0 released

[uklimaschewski]

I am happy to announce the the release 3.1.0 of EvalEx, the popular expression parser and evaluator for Java.

The new version introduces several new features:

• The new date-time and duration data types allow parsing, calculation and formatting of date-time and duration values.
• A new NULL value data type allows for working with null values.
• A refactored data type conversion allows a more clearer and also customizable interface for converting variable values.
• A new configuration option was added to automatically round the final result.

Additional contributions:

• handled nested evaluation value by @PrajwalBanakar26 in handled nested evaluation value #376
• adds lombok.Generated to proguard ignore warning configuration by @uklimaschewski in adds lombok.Generated to proguard ignore warning configuration #394
• Coalesce Function by @andresmarenco in Coalesce Function #397
• fix readme gh-pages links by @karlivory in fix readme gh-pages links #400

A very big thank you to all who contributed to this release!