Freewin 1.51 In Devel Branch

[tbp1...@gmail.com]

Freewin 1.51 has the following improvements and fixes:

1.    More tweaks to internal stylesheets.
2.     New diagnostic bool setting fw-copy-html: copy rst output to clipboard.
3.     Editor tab width set to approximately match four spaces.
4.     Change tab characters to @tabwidth spaces if present, otherwise 4 spaces when writing back to host node.
5.     Tie FW window to v instead of p.  This allows the underlying node to get moved to new positions in the outline without the window closing.
6.     Fix problem of lost \n when writing back to host node.
   

Items 3, 4, and 6 make editing code in FW a better experience.  It's still pretty basic compared with the Leo body editor, but considering that FW was conceived of as a text and Rst viewer, not a code editor, these enhancements are helpful.

Item 2 is especially helpful if you are developing or changing stylesheets for the rendered RsT view.