update systemd service file (#26)

fix: startup flag

feat: image dimension filtering (#22)

* feat: image dimension filtering

* bump version to 1.9.3

bugfix: Disable local mode if dynamic is enabled

Add `--wallhaven-config`to take config file path

fix: change subreddit of reddit test

Dynamic wallpaper (#18)

* feature: time-based Dynamic Wallpaper (--dynamic)

refactor: remove initial update loop.
refactor: add force_dark_theme to ThemeOptions

* use exact interval secs as update in initial settings parse

* Fix local mode

- fix bug in `secs_till_next_hour`

* refactor: secs_till_next_hour()

* add test for local mode

* prevent canonicalize error, use current_dir on error

* fix test for dynamic wallpaper

* update README and CHANGELOG

* fix test: fix typo

update changelog & bump version

update README and CHANGELOG

Use systemd unit file for startup

- bugfix: fix crash on gnome < 42.