New Features

support for template variables of a more complex shape and form (docs):
- new boolean variable type
- new list variable type (for now, only supporting lists of strings)
- new object variable type which allows variables to be nested in more complex structures and introduce some grouping
improved handling variables that have defaults (see #108)
- previously, when incarnations were created from a template without specifying values for variables that have defaults, these defaults were saved in the incarnation state as if the user had specified them explicitly. This caused that a change of default values in the template, to not be reflected in the incarnation after an update. Even if the user did not specify the default value explicitly.
- now foxops separates the user-specified values from what is defined in the template

Breaking Changes & Deprecations

the allow_import parameter on the create incarnation endpoint was completely removed
the support for template variables of type float was removed
support for reading variables from a defaults.fvars file in the incarnation repository was removed

the changes API was returning wrong status information for changes with merge requests. this has been fixed.