Bug fix for bug #197
Permit silent failing in file rotation if file absent & fix test class
Added debug message
Removed stacktrace
Merge pull request #198 from matthias-ronge/issue_197

Bug fix for bug #197
Implement option to copy metadata between structural elements
Get things to work
Ignore MetadataTypeNotAllowedException, log debug message
Add sensible toString() methods
Do not report non-related errors from subroutine
Fix NullPointerException
Correct description
Added access modifier and javadoc
Merge pull request #199 from matthias-ronge/issue_170

Merge:  Populate metadata fields with other fields’ values if empty after import (#170)
Fix GPL text (FSF address was wrong)

The address of the FSF changed many years ago. Instead of using the
current address, the new text was copied from GPL 3 which simply
redirects to a URL. This avoids unnecessary future changes when the
FSF moves again.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
experimental
build: Enable compiler warnings
Try to fix warnings
Umlaut test
experimental: Format code