Pympress

- Reduce noise in log
- Add big button to toggle pointer off <-> {manual or always}
- Improve automatic builds (for RPM and Windows)
- Exit gracefully (save prefs, return 0, etc.) on interrupt
- Fix text getting inserted in wrong locations
- Properly clean up (watchdog objects, windows) for interactive sessions
- Simplify annotations display for braille accessibility

This release brings a number of convenience fixes, nothing that should affect a lot of people.
- End of python 2 support
- `.desktop` file (and icon) now installed via pip, so users can have access to pympress without console
- Some css improvements, especially for macOS users where the background overriding the theme’s settings caused poor contrast
- Less jumpy layout for width-constrained screens
- Bug fix restoring the access to the timing breakdown
- Make timing breakdown window scrollable
- Locales update
- Fix man page number
- Name translators in documentation
- Other docs updates
- More freedesktop-compliant way to disable the screensaver, which means it also works on Wayland
- Distribute zips for windows for portable versions

Update release mechanisms, for Homebrew and building for Windows via appveyor.

A handful of new features, mainly centered around configuration files and video support:
- Portable configurations, supported by ticking `Starting Configuration` > `Portable installation`
This requires write permissions in the root install directory of pympress.
- All keyboard shortcuts are configurable in the config file.
- Support for Gstreamer as a video backend rather than VLC
- Configuration file locations now respect platform-specific conventions better
- Log file locations also respect platform-specific conventions and are written to user locations to avoid problems with multi-user systems
- Options for both video backends to enable/disable, set initialization options, and choose applicable mime types.
- Blank background colour can be black or white (`white_blanking` option under `[content]` in the configuration file)
- Configuration file `pympress/share/defaults.conf` containing default/fallback values.
This file should not be modified by the user.
- The laser pointer can now be switched on continuously

A handful of new features, mainly centered around configuration files and video support:
- Portable configurations, supported by ticking `Starting Configuration` > `Portable installation`
This requires write permissions in the root install directory of pympress.
- All keyboard shortcuts are configurable in the config file.
- Support for Gstreamer as a video backend rather than VLC
- Configuration file locations now respect platform-specific conventions better
- Log file locations also respect platform-specific conventions and are written to user locations to avoid problems with multi-user systems
- Options for both video backends to enable/disable, set initialization options, and choose applicable mime types.
- Blank background colour can be black or white (`white_blanking` option under `[content]` in the configuration file)
- Configuration file `pympress/share/defaults.conf` containing default/fallback values.
This file should not be modified by the user.

Automated upload of windows binaries, more logo visibility.