News and compat annotation for #29754 (DateTime(::Date, ::Time) constructor).

Author: fredrikekre

NEWS.md

@@ -50,6 +50,7 @@ Standard library changes
   * The process id is appended to malloc log files in order to track memory allocations of
     multiple processes ([#29969]).
   * `Base.julia_cmd` now propagates the `--inline=(yes|no)` flag ([#29858]).
+  * New `DateTime(::Date, ::Time)` constructor ([#29754]).
 
 Compiler/Runtime improvements
 -----------------------------

stdlib/Dates/src/types.jl

@@ -318,6 +318,9 @@ Construct a `DateTime` type by `Date` and `Time`.
 Non-zero microseconds or nanoseconds in the `Time` type will result in an
 `InexactError`.
 
+!!! compat "Julia 1.1"
+    This function requires at least Julia 1.1.
+
 ```jldoctest
 julia> d = Date(2018, 1, 1)
 2018-01-01