struct: create develop branch

This dummy commit only serves to establish the new 'develop' branch
struct: Add README-branching

Add a document to describe the desired branching work-flow - after the initial mess has been cleaned up the brute-force way.

This commit also serves for establishing the 'master' branch as separate from 'develop'.
OLLlatex: require mdwlist, paralist

Add support for enhanced list environments to OLLbase.sty
OLLbase: Fix tex-text mapping issue

-- wasn't resolved to a dash etc.
Fix is to use \defaultfontfeatures before selecting fonts
doc: Update \doctitleifsub

The message that is printed in each sub-document (when it's compiled standalone)
is updated to the current addresses
copyright-notice: change FDL to CC

The copyright notice that is included in all LaTeX documents is changed from
a FDL to a CC license.
This will automatically be propagated to the next compilations,
but the musicexamples-0.2 manual has to be deal with manually
tut: Fix \setbookmaintitle

The main title of the Tutorials book wasn't updated to the new bookpart syntax
OLLlatex: Add \lilypond command
tut: createSongbooks initial version
tut: songbooks: clean up formatting

clean up the formatting of the initial contribution.
Main changes:
- Remove spaces inside \texttt{} commands
- Change \texttt to \cmd or \package
- split lines to one sentence per line