Document new idiom for using Flag.
Merge pull request #2741 from quickfur/flag

Document new idiom for using Flag.
std.conv.d - Fix typo
Merge pull request #2748 from JinShil/patch-1

std.conv.d - Fix typo
fix constness of some char*
fix property enforcement
Add missing imports
Merge pull request #2749 from MartinNowak/curl

fix constness of some char*
Merge pull request #2752 from 9rnsr/fix_imports

Add missing imports
Merge pull request #2751 from 9rnsr/enforceProp

fix property enforcement