Fix issue 10893: added missing or renamed DDoc parameters (found by fix to 10236)
Reverted the DDoc changes to std.datetime
Use a switch table for enum->string conversion, which avoids runtime memory allocation.
fix issue 10913 @safety of std.regex replace API
Merge pull request #1536 from lionello/bug10893

Fix issue 10893: added missing or renamed DDoc parameters
Merge pull request #1540 from AndrejMitrovic/ConvOptimize

Use a switch table for enum->string conversion, which avoids runtime memory allocation.
Merge pull request #1532 from blackwhale/fix-replace-check

Fix issue 10913 std.regex API regression