feat(datetime): publicly import std.datetime.stopwatch in std.datetime

changelog/stopwatch.dd

@@ -0,0 +1,6 @@
+`std.datetime.stopwatch` is now publicly imported when you import `std.datetime`
+
+This omission was in place since `std.datetime.stopwatch` was introduced, as
+`std.datetime.stopwatch.benchmark` conflicted with `std.datetime.benchmark`.
+
+The latter was removed in 2021 (2.075).

std/datetime/package.d

@@ -131,6 +131,7 @@ public import std.datetime.date;
 public import std.datetime.interval;
 public import std.datetime.systime;
 public import std.datetime.timezone;
+public import std.datetime.stopwatch;
 
 import core.exception : AssertError;
 import std.functional : unaryFun;

std/datetime/stopwatch.d

@@ -18,30 +18,6 @@ $(TR $(TD Flags) $(TD
 ))
 ))
 
-    $(RED Unlike the other modules in std.datetime, this module is not currently
-          publicly imported in std.datetime.package, because the old
-          versions of this functionality which use
-          $(REF TickDuration,core,time) are in std.datetime.package and would
-          conflict with the symbols in this module. After the old symbols have
-          gone through the deprecation cycle and have been fully removed, then
-          this module will be publicly imported in std.datetime.package. The
-          old, deprecated symbols has been removed from the documentation in
-          December 2019 and currently scheduled to be fully removed from Phobos
-          after 2.094.)
-
-    So, for now, when using std.datetime.stopwatch, if other modules from
-    std.datetime are needed, then either import them individually rather than
-    importing std.datetime, or use selective or static imports to import
-    std.datetime.stopwatch. e.g.
-
-    ----------------------------------------------------------------------------
-    import std.datetime;
-    import std.datetime.stopwatch : benchmark, StopWatch;
-    ----------------------------------------------------------------------------
-
-    The compiler will then know to use the symbols from std.datetime.stopwatch
-    rather than the deprecated ones from std.datetime.package.
-
     License:   $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0).
     Authors:   $(HTTP jmdavisprog.com, Jonathan M Davis) and Kato Shoichi
     Source:    $(PHOBOSSRC std/datetime/stopwatch.d)