std.conv: Fix ambiguity when target has ctor and source has opCast
std.array: Allow joining constant arrays
Fix Issue 4725 - std.algorithm.sum()
Document use of Kahan vs. vanilla summation
Added LREF to sum in reduce
pairwise sum returns double for ranges with float elements
Fix Issue 12003 - std\zip.d(421): Deprecation
std.net.curl: Publicly import CurlOption
Remove package function `defaultInit`

It was a hack for the compiler bugs around T.init. Now the they are properly fixed, so the unused helper function is actually unnecessary.
Fix predicate template implementations in std.traits and std.range

Use T.init property instead of void initializer, because it will work even if T is const or immutable type.

I must change a part of unit test for the bug 6935, because we cannot support ranges which overrides init property.
Add a test case isAssignable!(void[1], void[1])
fix Issue 12071 - Algebraic won't take delegate returning structure

Use `Variant` rather than `VariantN` in order to pack arguments and returned value in opCall.
Regression Test 8282 - new Array!T

This one doesn't have an equivalent test, so adding this to make sure the bug never comes back. The actual issue was fixed in 2.063.

https://d.puremagic.com/issues/show_bug.cgi?id=8282
TotalContainer documentation
unseal SList
unseal DList
Unseal Array
Fixes Issue 7666 - Implement reverse property for Tuple.
Fix Issue 5753 - Disallow map with void function.

https://d.puremagic.com/issues/show_bug.cgi?id=5753
Fix Issue 7287 - BinaryHeap example

Two changes:

1. Fixed the array in the final assert. Not sure where the original array came from -- not Intro to Algorithms, I checked my copy!
2. Moved to documented unit test so we make sure it actually passes.

https://d.puremagic.com/issues/show_bug.cgi?id=7287