Development to Integration for release 0.1.5

[cjcodeproj]

Accumulated changes:

• musicscan-34 Flag for bonus tracks
• musicscan-37 Country and Folk edit flag is broken
• musicscan-44 Typing bug with sanitize_for_xml
• musicscan-35 XML tag spacing match
• musicscan-43 Filename artist and album separator should be a dash not an underscore
• musicscan-41 Output header at top of run
• musicscan-39 Updates to Editing document
• musicscan-31 Static typing