Show_Submission/author_title.pl: Added the subtitle field taken from the
JSON into the YAML
Show_Submission/do_pandoc_assets: New script to process Markdown assets
files. Not in use.
Show_Submission/copy_shownotes: Changed the location of the function library
Show_Submission/do_brave: Updates to the way local stand-alone HTML is generated for
review purposes.
Show_Submission/do_index: Changed the location of the function library
Show_Submission/do_pandoc: Changed the location of the function library; now uses
'author_title.pl' to generate YAML for Pandoc
Show_Submission/do_parse: Trivial change
Show_Submission/do_pictures: Changed the location of the function library; better
handling of the show specification
Show_Submission/do_report: Changed the location of the function library
Show_Submission/do_update_reservations: Changed the location of the function library
Show_Submission/fix_relative_links: Added features 'say' and 'state'
Show_Submission/parse_JSON: New checks: notes too short, trailing spaces on title,
summary and tags (needing JSON changes). Check for Markdown in the
assets (see 'do_pandoc_assets'). New 'trim' function.
