refs https://github.com/TryGhost/Toolbox/issues/335
- When eventually the major will be bumped next week the returned version will become `5.0.0` which changes the `content-length` header in all of the responses using the version from package.json
- The version number is dynamic, so it's expected the content-length to float as minor and patch versions fluctuate in 1-2 digit numbers. For lon-term easy maintenance it's best to set the content-length to any number (or maybe some sort of floating range in the future?)
- We're in the process of rolling out a new e2e-framework, and getting rid of the regression tests
- We'll eventually merge all the tests together and into using the same framework