This file format is used by the hledger[1] tool (a plain text
accounting system). I've added all of the transactions in our unity
trust bank account to-date.

I hope to use this file to more easily generate reports to share with
the rest of CoTech.

[1] https://hledger.org

I based the pandoc stuff on a blog post[1] I found. I've generated 4
receipts for the contributions in
`statements/statement_2019-04-17_2019-06-03.pdf`.

[1] https://medium.com/@martin_betz/generate-pdf-invoices-from-markdown-using-pandoc-5cb3fe84ba3a