New upstream release
- core: Don't send relative redirect URLs when behind a reverse proxy
- core: Escape backticks etc. in directive error messages as HTML
entities so that the error message is not subsequently parsed as
Markdown
- mdwn: Enable fenced code blocks, PHP Markdown Extra-style definition
lists and GitHub-style extensions to HTML tag syntax when used with
Discount >= 2.2.0 (Closes: #888055)
- img: Fix auto-detection of image format (if enabled, which is
strongly discouraged) with ImageMagick >= 6.9.8-3
- rst: Use Python 3 instead of Python 2
- build: `set -e` before each `for` loop, so that errors are reliably
trapped
- build: Use if/then instead of `||` so that the `-e` flag works
- build: Ensure that pm_to_blib finishes before rewriting shebang lines
- t: Make the img test pass with ImageMagick >= 6.9.8-3
(Closes: #891647)