#141 Spline editor should issue error message when pasting malformed data

[Peter Kazakoff]

The spline editor provides the ability to paste tab-separated points in from a table (such as excel). However, this table requires three columns (X, Y, and point type), and this isn't thourougly documented. Suggested improvement: if the user tries to paste unrecognized data from the clipboard, provide an error dialog explaining the required format.

[Kenneth MacCallum]

Just pushed up an update that makes it much more forgiving.

It now will accept either 2 or 3 columns of data. It pops up a dialog to tell you what format works.

[Kenneth MacCallum]

also accepts comma separation if it doesn't find tab separation.

[Kenneth MacCallum]

is ok with lower case for the point type

[Kenneth MacCallum]

Fixed in master