Urlwatch

Added
- Filter to pretty-print JSON data: `format-json` (by Niko Böckerman, PR250)
- List active Telegram chats using `--telegram-chats` (with fixes by Georg Pichler, PR270)
- Support for HTTP `ETag` header in URL jobs and `If-None-Match` (by Karol Babioch, PR256)
- Support for filtering HTML using XPath expressions, with `lxml` (PR274, Fixes 226)
- Added `install_dependencies` to `setup.py` commands for easy installing of dependencies
- Added `ignore_connection_errors` per-job configuration option (by Karol Babioch, PR261)

Changed
- Improved code (HTTP status codes, by Karol Babioch PR258)
- Improved documentation for setting up Telegram chat bots
- Allow multiple chats for Telegram reporting (by Georg Pichler, PR271)

Added
- Support for specifying a `diff_tool` (e.g. `wdiff`) for each job (Fixes 243)
- Support for testing filters via `--test-filter JOB` (Fixes 237)

Changed
- Moved ChangeLog file to CHANGELOG.md and using Keep a Changelog format.
- Force version check in `setup.py`, to exclude Python 2 (Fixes 244)
- Remove default parameter from internal `html2text` module (Fixes 239)
- Better error/exception reporting in `--verbose` mode (Fixes 164)

Removed
- Old ChangeLog entries

Fixed
- Bugfix: Do not 'forget' old data if an exception occurs (Fixes 242)

Fixed
- Retry: Make sure `tries` is initialized to zero on load (Fixes 241)

Changed
- html2text: Make sure the bs4 method strips HTML tags (by Louis Sautier)

Added
- Browser: Add support for browser jobs using `requests-html` (Fixes 215)
- Retry: Add support for optional retry count in job list (by cmichi, fixes 235)
- HTTP: Add support for specifying optional headers (by Tero Mononen)

Changed
- File editing: Fix issue when `$EDITOR` contains spaces (Fixes 220)
- ChangeLog: Add versions to recent ChangeLog entries (Fixes 235)

Added
- E-Mail: Add support for `--smtp-login` and document GMail SMTP usage
- Pushover: Device and sound attribute (by Tobias Haupenthal)

Changed
- XDG: Move cache file to `XDG_CACHE_DIR` (by Maxime Werlen)
- Migration: Unconditionally migrate urlwatch 1.x cache dirs (Fixes 206)

Fixed
- Cleanups: Fix out-of-date debug message, use https (by Jakub Wilk)