v4.8.2

HIGHLIGHTS:

• SIGMA improvements

DETAILS:

• SIGMA: fixed 1 pixel wide blur on shadows with penumbra size < 1 pixel
• SIGMA: better behavior for multi-layered shadows (a narrow penumbra inside a wide penumbra)
• SIGMA: reduced potential flickering
• SIGMA: fixed suboptimal output of the blur pass affecting TS pass
• SIGMA: improved weights for moments calculations in TS pass
• NRD: resolved some TODOs
• updated deps
• updated docs