Best fit parameters not present in results struct

[maxskoda]

• This issue is a [bug report]

• What is the current behaviour?
  After performing a fit or a DREAM run, the results.fitParams struct is just a single value.

• If the current behaviour is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem
  ..just run a fit and check contents of results.fitParams

• What is the expected behaviour?
  results.fitParams should be an array containing the final best fit parameters.

• Please tell about the environment(s) affected:

  • Version: [e.g. 1.0.0-beta]
  • Operating System: [e.g. All | Windows (10, 8, 7) | Linux (Ubuntu, Fedora, RedHat etc)]
  • Platform: [e.g. Name processor and graphics card | IDAaas | Remote Desktop Connection]

• Other information (e.g. detailed explanation, screenshots, stack traces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, gitter, etc):