kivy 2.0.0 + cleanup

requirements.txt

@@ -1,14 +1,12 @@
-certifi==2020.6.20
+certifi==2020.12.5
 chardet==3.0.4
-Cython==0.29.14
-dataclasses==0.6
 docutils==0.16
+ffpyplayer==4.3.2
 idna==2.10
-Kivy==2.0.0rc2
+Kivy==2.0.0
 Kivy-Garden==0.1.4
 kivymd==0.104.1
-Pillow==7.2.0
-pygame==1.9.6
-Pygments==2.6.1
-requests==2.24.0
-urllib3==1.25.9
+Pillow==8.0.1
+Pygments==2.7.3
+requests==2.25.0
+urllib3==1.26.2