Bugfix-Release for 4.0.0 branch, (replaces v4.0.2)

[jkriege2]

This includes everything from v.4.0.0/v4.0.1 and in addition:

#115: bugfix for drawing custom labels

NOTE: This release replaces v4.0.2, which was put onto the wrong branche and was dysfunctional (cf. #123)

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This discussion was created from the release Bugfix-Release for 4.0.0 branch, (replaces v4.0.2).