* Bugfix: don't set beaming for outer half beams. This fixes some
slurs attached to stem end.
* Bugfixes for (de)crescendo spanners and generic text spanners
* Bugfix: Slur::set_interface (): don't overwrite, but copy attachment
property.
* Started documenting some new or not too wel documented features.
* Bugfix: only assume making deep split html documentation when
makeinfo --version 4.0.jcn2 is available. Although the documentation
should now build with plain makeinfo 4.0, some links will be broken.
* Bugfix: lilypond-book: check for .texidoc files *after* running lilypond.