implements up/down slider mode binds

adjustments to pdirty event toggling.

press/release events defined for slider binds

note:
the main window no longer returns keyboard events

minor bump

Author: onyx-and-iris

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "nvda_voicemeeter"
-version = "0.3.1"
+version = "0.4.0"
 description = "A Voicemeeter app compatible with NVDA"
 authors = [
     { name = "onyx-and-iris", email = "code@onyxandiris.online" },