Merge pull request #86 from webbedspace/master

Interface improvements + new image asset feature + other enhancements
Merge pull request #88 from webbedspace/master

More changes
Merge pull request #89 from webbedspace/master

Further additions
Merge pull request #91 from webbedspace/master

Close-to-final additions
Merge pull request #94 from webbedspace/master

Imminent 1.4.0 release
Merge branch 'master' of git://github.com/tweecode/twine into tweecode
Merge branch 'master' of git://github.com/tweecode/twine into tweecode
Merge branch 'master' of git://github.com/tweecode/twine into tweecode
Fixed positioning of new passages
Merge pull request #105 from greyelf/i012_position_new_passage

Fix positioning of New Passages