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
fix for bugzilla 7693

enum and bool both fixed and pretty minimal
Merge pull request #1902 from burner/getoptEnumTailFix

fix for bugzilla 7693
Change documentation to use the correct parameter name.
Merge pull request #1913 from schuetzm/doput_doc_fix

Change documentation to match parameter name.
std.process: Improve shell escaping on Windows (issue 10863)
Merge pull request #1915 from CyberShadow/std-process-cmd-escaping

std.process: Improve shell escaping on Windows (issue 10863)
Add ref to array() and object() of JSONValue getters to assign new element
Add tests for ref array() / object() getters
Elaborate on container primitives in std.container's table header
Coverage for minCount
Merge pull request #1916 from repeatedly/add-ref-to-json-array-object-getter

Add ref to array() and object() of JSONValue getters to add new element
Merge pull request #1918 from JakobOvrum/containerdocs

Elaborate on container primitives in std.container's table header
Merge pull request #1919 from monarchdodra/minCountCov

Fix and coverage for `minCount`