Improved copy in pattern editor

[pernyblom]

I would like to have the following feature in the pattern editor:
* Directional copy+paste. When this feature is used, the current "expanded" selection is copied to the right, left, up or down.

Description of "expanded": If one only has a part of a section selected, the expanded selection is the minimal selection that contains both the original selection and only whole sections.

This is actually a feature I use a lot in Eclipse when coding and it is a very good time saver.

In Eclipse, the key combination ctrl+alt+up/down is used for this. In OpenMPT one can also use the left/right for copy+paste to the left and right.