Improved scheme for automatic version numbering
Fixed installation to include missing resource files
Fix plotting of layer numbers greater six

Introduce 15 more colors for layers above six. For higher layers
the colors are repeated again.
Merge branch 'layer_colors' of https://github.com/mabl/gdsCAD into layer_colors
Modified colormap to reduce number of similar colors
Updated documentation in preparation for new version
Fix Elements constructor for 1-element lists
Merge pull request #6 from mabl/patch-1

Fix Elements constructor for 1-element lists