First release on GitHub

• First draft of repository's stragegy and roadmap
• Created the necessary README and change log files
• Re-organised top-level directories and reformated many non-YAML files to YAML
• Re-worked quotes to standardise previous Markdown markup into a YAML schema
• Started the authors.yaml file to centralise data about quote authors
• Added UUID to all quotes for subsequent referencing
• Added GNU build setup
• Deprecated the use of Markdown files for structured data; Markdown markup remains in use in target YAML files