ctx: sync with upstream

Better resource management for smart-redraws, API change - dropped argument in pixel_update callback for smart redraws. Use optimized hairline renderer for <= 0 line_width. Optimizations for rasterizer.

mentioned in merge request !584 (merged)

added 2 commits

• 7f1a703a - ctx: sync with upstream
• 323189df - ctx: tune config

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added 14 commits

• 323189df...5ed1d828 - 12 commits from branch main
• 0997a112 - ctx: sync with upstream
• eadb2a7b - ctx: tune config

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added 2 commits

• 43fd546e - ctx: sync with upstream
• a6bde3c7 - ctx: tune config

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merged