1.3 release

- (breaking change) user helper templates must now be in a separate dir (--extra-tpl)
- source code snippets using the new snippet element and XSLT extension elements
- source code syntax highlighting (with pygments)
- source code snippet graceful resize with the new --generate-js command-line option
- modular css library with the new --generate-css command-line option
- new jinja2 macro library (skryba-macros.html)
- new post_date macro
- new chatgpt element for ChatGPT session transcripts
- improved documentation

release 1.2

List of changes since 1.1:

- dir/index.html style pages for posts and tags
- improved support for pagename parameter in templates (post,tag)
- photo gallery (with thumbnail photos)
- version numbering :-) and --version command line parameter
- made Bible references more universal
- gitlab CI/CD
- render external links in posts with target _blank
- improved post date formatting (without leading zeroes)
- documentation improvements

initial version