Azure Buff Bars

First public release.

- Buffs on you shown as a row of icons with a blue border, a timer bar and time left
- Debuffs on you shown in a second row with red borders
- Rows grow left by default; direction can be set to left, right, down or up
- Optional bar layout: full-width timer bars with spell names
- Buffs with no duration (aspects, forms, stances) are shown
- Options panel: Esc > Options > AddOns > Kestrel, or /kes
- /kes unlock and /kes lock to move the rows
- /kes hide <spell> to hide a specific aura

Built for WoW: Forever. In combat the game limits what addons can read,
so timers show whole seconds and auras are not re-sorted until combat ends.