Draft ZIP 208: Shorter Block Target Spacing
Draft ZIP 208: Shorter Block Target Spacing

Co-authored-by: Simon Liu <088e16a1019277b15d58faf0541e11910eb756f6@z.cash>
Signed-off-by: Daira Hopwood <cd7d43d5556a38ce626d53826fddc46adc597539@jacaranda.org>

zcash/zips,zcash/zips,zcash/zips,zcash/zips