[Suggestion]: Better volume controls.

Right now we can open the system menu and drag sliders. We can also use macros to turn volume on/off or set the volumes at a specific level (example: /BGM 69).

It would be nice to have a separate UI element for volume you can choose to enable/disable for easier adjustment of in game volumes. This would be helpful for those of us with hearing issues who are constantly adjusting the volume to hear this wonderful game.

It would also be nice to add a macro command to ADJUST the existing volume. This would allow us to write macros to make our own volume control button if need be. For example, if i typed /BGM 69 it would set background music volume to 69. If I wanted to decrease the volume by 40, a command like /BGM -40 (would in the example above would reduce the BGM volume to 29) would be great.