Minor update to CG
Changes.tely updated - 2.19.x before Feb 17th 2014

Documented all new enhancements and features since 2.19.0 was released
up until current master (Feb 4 2014).

Contains Information for the following fixed Tracker Issues

3720, 3753, 3761, 3772, 3780, 3793, 3814, 3815, 3817, 3818,
3821, 3831 and 3835.
Web: Introduction.itexi - add Stockhausen Snippet

Issue 3803

Adds Stockhausen snippet - as used in German Wikipedia Article
Polynomial.hh - Make LilyPond compile w/ musl libc

Provided by Felix Janda
Doc: Point-and-Click has wrong default and ref to SVG added

Issue 3854

Also made sure that references to Point-and-click are consistent
through lily.scm and external.itely (including TexInfo formatting).

Tried to get some consistency with regard to remove @code{} for
PDF, PS and SVG when referring to the file type or viewer.
Doc: CG - Updated Bug Squad List

As of February 16th 2014
Authors.itexi - Updated Current Developers list

No new people added. But some moved to Previous Developers.

Based on work done in the last 18 months.
Restrict lilypond-book mingw32 subprocess workaround to Python versions < 2.6
Issue 3874: lilypond-book: Fix TEXINPUTS environment manipulation on W32
Issue 3860: Add command \justify-line

The command \fill-line spaces words taking word length into account
such that the following distances are equal: outside edge of outside
markup to center of adjoining markup; center to center of
neighboring interior markups.  As a consequence, the space between
words is unequal when the lengths of the markups vary and/or there
are more than three markups in the line.

The following patch creates the command \justify-line, which spaces
markups to fill a line such that the space in between each pair is
constant.  Collisions are prevented by ensuring that this distance
does not fall below the current setting of word-space.
Release: bump VERSION_DEVEL.
PO: update template.
Release: update news.
Release: bump VERSION.
Merge 'master' into universal-font (include 2.19.3)