Updated to version macSVG 1.2

Update release notes.

The URL was fixed for the Google SVG Search Website under the Help menu.

A couple of items were added to the README.md and RELEASE-NOTES.md files.

This commit changes the Project Settings to use the Legacy Build Syst…

…em. Some unusual behavior was observed during testing with the New Build System, like script calls to getBBox returning wrong results when applying transforms to elements.

Fixed a bug from the previous commit that prevented the Element Info …

…plugin from displaying current information during editing operations (move, resize, etc.)

Some copyright dates were updated for 2018.

Updated README and RELEASE NOTES for macSVG 1.1.3.

Incremented version to 1.1.2 for next release. Updated README.md and …

…RELEASE-NOTES.md.

Updated README.md and RELEASENOTES.md for release of macSVG 1.1.1.

Added new markdown file: RELEASE-NOTES.md, containing release notes f…

…or macSVG v1.1.

In SVGPathEditor, an error was found in path editing of cubic curve s…

…egments where extra editing handles were added improperly for the "x0y0" and "x3y3" implied control points (reflections of "x1y1" and "x2y2", respectively). The extra handles did not function correctly, particularly for the curve continuity option. The x0y0 reflected handle should be drawn when the previous segment was a Moveto ("M" or "m") command. The x3y3 reflected handle should be drawn for the last segment of a cubic curve.