An experimental plan for easier maintenance. There will be one linear
quickref-NAME.md file per ledger-like, with similar headings and
content across all quickref files. A script will take the sections and
tabulate them nicely to give a layout like the current page. And
perhaps there'll be some javascript to show/hide each format.
Covers the essentials of Ledger/hledger/Beancount journal format.
The master copy is in google docs for easier table editing,
but this will likely change in future.
