v0.2.6

The new behavior of `karate.get' in v0.2.5 caused a regression / break in headers routine (call) handling. This was fixed and multiple unit test cases have been added to prevent this happening in the future.

If you are upgrading from v0.2.4 or earlier, there are some breaking changes, please refer to the detailed release notes: https://github.com/intuit/karate/releases/tag/v0.2.5