mason v0.6.4

Patch Changes

• #44 68f6fbd Thanks @antstanley! - scope the WCAG 2.2 AA claim honestly (video captions excepted pending upstream data) and reserve a caption-track path: VideoBrick grows an optional captions list and the player renders track elements when it is populated

• #43 38fd727 Thanks @antstanley! - a deploy no longer hard-reloads an active tab: the reload waits until the tab is hidden or the next navigation, so the wall, scroll position, and playing video survive

• #47 d5ab5a9 Thanks @antstanley! - persist only the caches that changed, each under its own key, and never during preview polls

• #48 3237320 Thanks @antstanley! - masonry lays one keyed list in feed order: column changes keep every brick's node, state and focus, re-lays are a single pass, and tab order follows the feed