Hotfix: Replaces egrep with grep -E (0.5.0)

Author: conor-f

setup.py

@@ -5,7 +5,7 @@
 setup(
     name="spotibar",
     description="Spotify plugin for Polybar",
-    version="0.4.0",
+    version="0.5.0",
     url="https://github.com/conor-f/spotibar",
     python_requires=">=3.6",
     packages=find_packages("src"),

src/spotibar/client.py

@@ -272,7 +272,7 @@ def is_playing(self):
         """
         Returns True if dbus thinks we are currently playing Spotify locally, False otherwise.
         """
-        cmd = "dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'PlaybackStatus'|egrep -A 1 \"string\"|cut -b 26-|cut -d '\"' -f 1|egrep -v ^$"
+        cmd = "dbus-send --print-reply --dest=org.mpris.MediaPlayer2.spotify /org/mpris/MediaPlayer2 org.freedesktop.DBus.Properties.Get string:'org.mpris.MediaPlayer2.Player' string:'PlaybackStatus'| grep -E -A 1 \"string\"|cut -b 26-|cut -d '\"' -f 1| grep -E -v ^$"
         try:
             if subprocess.check_output(cmd, shell=True, text=True).strip() == "Playing":
                 self.config.set("last_playing_timestamp", self.get_simple_timestamp())