Usage of WEB macro for License everywhere
Fix incorrect link to zlib
Merge pull request #2614 from Geod24/fix-license-doc

[DDOC] Usage of WEB macro for License everywhere
Mark std.uni.floorPowerOf2 and ceilPowerOf2 as nogc
Merge pull request #2620 from tom-tan/nogc-uni-floorPowerOf2-ceilPowerOf2

Mark std.uni.floorPowerOf2 and ceilPowerOf2 as nogc