[TASK] Add .editorconfig
See (http://EditorConfig.org)
[TASK] Move inherit and inheritEmpty to FormInterface
[BUGFIX] Type hint FormInterface for unsetInheritedValues to allow Sections and Containers
Merge pull request #683 from hmspl/inherit

[BUGFIX] Regression fix for 7.1.1  not allowing unsetInheritedValues on Sections or Containers
Merge pull request #682 from coding46/EditorConfig

[TASK] Add .editorconfig
[TER] 7.1.2
[TASK] Set stability beta and version 7.2.0 for development