Merge pull request #256 from mballance-sf/master

Remove Java 1.7-only Character.isAlphabetic
Correct Java 7 error
Fixup
""
Merge remote-tracking branch 'upstream/master'
- #(283) - Correct a case where a folded-by-default folding region was
auto-folded
  after pasting content into the region.
""
- #(nobug) - Ensure folding is only applied when the file is initially
opened

- #(78 - enh) - Add preference page to control folding