#9 Support for multi-line properties

[Dale King]

Sometimes what you put in a properties file is more
complex than a simple little string. Some times you
need multiple lines of text with linefeeds and possibly
with leading spaces in the lines after a line feed.

I would like the value editor to support multiple lines of
text and properly escape it for me.

So if I enter this into the text box:

Here is some text
and here's some more

Then it will put this into the properties file:

thekey=\ Here is some text\n\
\ and here's some more