callback uses size_t not double

- Not sure why the curl internal double arguments
  are converted to size_t in the first place though.
Merge pull request #2035 from MartinNowak/fixCurlDocs

callback uses size_t not double
Fix pull request #1961: add more hasExceptionTraps checks
Merge pull request #2039 from jpf91/fix1961

Fix pull request #1961: add more hasExceptionTraps checks
Enable DDoc for std.uni.byCodePoint

See also #1985
Merge pull request #2040 from JakobOvrum/bycodepointdoc

Enable DDoc for std.uni.byCodePoint
Remove another use of the comma operator
Merge pull request #2041 from schuetzm/remove-one-more-comma-operator

Remove another use of the comma operator
Fix issue 12446 - std.parallelism.amap: prefer iteration to indexing
Merge pull request #2042 from Safety0ff/fix12446

Fix issue 12446 - std.parallelism.amap: prefer iteration to indexing
Fix Issue 12449

Undefined format in std.algorithm.max
fix issue 12419

Test that UTF-8 decoding yields a value in the valid range.
UTF-8 may encode values beyond these covered by [0, 0x10FFFF].
Update algorithm.d
Update algorithm.d
Revert
Merge pull request #2038 from blackwhale/issue-12419

Fix issue 12419: assertion failure in std.utf
Merge pull request #2047 from monarchdodra/12449

Fix Issue 12449 - Undefined format in std.algorithm.max
(last)indexOfAny(index)

whitespace

some code reductions

faster