Backport slicing improvements to 0.25.x#280

apoelstra merged 13 commits into

ElementsProject:0.25.xElementsProject/rust-elements:0.25.xfrom

philipr-za:backport-slicing-improvements-0.25.xphilipr-za/rust-elements:backport-slicing-improvements-0.25.xCopy head branch name to clipboard