Drop entries from Uploaders that have not uploaded in 3+ years with esteemed thanks for their previous work.

Bump the officially required version of Python from 3.5 to 3.6. (Closes: reproducible-builds/diffoscope#117)

Don't print a traceback if we pass a single, missing argument to diffoscope (eg. a JSON diff to re-load).

Add a .dockerignore file whitelist files we need in our container. Thanks to Emanuel Bronshtein for the original idea. (Closes: #105)

Run diffoscope as a non-root user in container. Thanks, Emanuel Bronshtein. (Closes: reproducible-builds/diffoscope#102)

Gbp-Dch: ignore

Use ARG instead of ENV for DEBIAN_FRONTEND in Dockerfile so we do not set this environment variable at runtime. Thanks to Emanuel Bronshtein. (Closes: reproducible-builds/diffoscope#103)

Clarify when an external command emits for both files, otherwise it can look like diffoscope is repeating itself when it is actually being run twice.

Don't pretty-print the JSON output by default as it will usually be so complicated to be unreadable by the human eye and it can be easily replaced by piping to "| jq".

Gbp-Dch: ignore

Remove (broken) fuzzy matching of JSON files as file 5.35 (in buster, released 2018-10-18) supports recognising JSON data. (Closes: reproducible-builds/diffoscope#106)

It was broken anyway; the "or" in the logic when checking the file_header should have been an "and".

Print the amount of free space that we have available in our temporary directory as a debugging message. (Re: reproducible-builds/diffoscope#100)

Signed-off-by: Jelle van der Waa <jelle@archlinux.org>

Gbp-Dch: ignore

Improve documentation of FILE_TYPE_HEADER_PREFIX and FALLBACK_FILE_TYPE_HEADER_PREFIX to remark that only the first 16 bytes are used.

Add "pdftotext" as a requirement to run the PDF test_metadata text. Special thanks to Chocimier/Piotr for the debugging work. (Closes: reproducible-builds/diffoscope#99)

Gbp-Dch: ignore

Gbp-Dch: ignore

Render multiline difference comments in a way to show indentation. (Closes: reproducible-builds/diffoscope#101)

The current description of the --exclude option only says that it
excludes files matching the glob.  It does not explicitly say whether
the file's base name or full name is used.  Document that the full
filename is used.

Gbp-Dch: ignore