Move version info into note bibtex field

Overloading the 'year' tag seems inappropriate.  This commit moves
the version info into the 'note' bibtex tag for the supplied record
and adds a (redundant) 'version' to the date field, on the assumption
that people unfamiliar with the project will need the extra prompt.
Merge branch 'release-target'
Move version info into note bibtex field for default CITATION.bib

This commit finishes 6493529 and undoes the 'year' field overloading in the
default bibtex record for the project.
Merge branch 'release-target'
Add 'part' numbering to individual pdfs

For ease of reference, this commit labels the main documents as 'part 1'
through 'part 5.'
Add complete bibliography as standalone document

For convenience, this commit adds a complete bibliography that compiles
to its own pdf file.  This lets teachers, etc., display one copy of the
backmatter for all of the separate parts.
Merge tag 'v0.3.4'
Tweak title display
Add short version of title to running headers
Add information about bug reporting to preamble
Change references from 'open-source' to 'open access'