MiliUI Cooldown Manager

New
- The Theme page and each bar's page are now split into tabs, and Countdown has its own Cooldown and Buff duration sub-tabs. Each sub-tab shows a short explanation.
- Buff duration has its own Decimals below (default 0), Color when low and Low below (sec) settings, separate from Cooldown. Color when low is on by default with Low below (sec) set to 5. You can set these for the whole bar or for a single spell.
- Clicking a spell's icon in the bar preview now opens a window with a Text tab, where you can change that spell's countdown, charges, stacks and keybind text without affecting the rest of the bar.
- Buff icons have a new Custom text tab in the same window. Use it to add a short note on the icon, such as what the buff does. The note sits along the bottom edge inside the icon by default, and nothing is shown if you leave it blank.
- Charges, stacks and keybind text can now be anchored to any of nine points on the icon. On bars, stacks can also be moved and still default to the bottom right.
- A Show stacks toggle below the bar preview lets you see where stacks will appear. It is off each time you open the page.
- A Grid button in the settings window shows an alignment grid, and you can hover over it to change the spacing. Bars dragged in Edit Mode snap to the grid.

Changes
- "Buff time" is now called "Buff duration".
- When Color when low is unchecked, Low color and Low below (sec) are grayed out. The Low below (sec) slider now starts at 1.

Fixes
- On bars with fixed slots, a trinket buff icon with no active buff now leaves an empty space instead of a dimmed icon.
- Unchecking Color when low for Cooldown no longer resets Low below (sec). Saved settings that had it turned off now load as off with 5 seconds.
- Stacks on bars now line up with the preview after you change their anchor.