add NEWS and compat

Author: simeonschaub

NEWS.md

@@ -85,6 +85,7 @@ New library features
 * New constructor `NamedTuple(iterator)` that constructs a named tuple from a key-value pair iterator.
 * A new `reinterpret(reshape, T, a::AbstractArray{S})` reinterprets `a` to have eltype `T` while potentially
   inserting or consuming the first dimension depending on the ratio of `sizeof(T)` and `sizeof(S)`.
+* `count` now accepts an optional `init` argument to control the accumulation type ([#37461]).
 
 Standard library changes
 ------------------------

base/reduce.jl

@@ -944,6 +944,9 @@ Count the number of elements in `itr` for which the function `f` returns `true`.
 If `f` is omitted, counts the number of `true` elements in `itr` (which
 should be a collection of boolean values).
 
+!!! compat "Julia 1.6"
+    `init` keyword was added in Julia 1.6.
+
 # Examples
 ```jldoctest
 julia> count(i->(4<=i<=6), [2,3,4,5,6])

base/reducedim.jl

@@ -369,6 +369,9 @@ dimensions.
 !!! compat "Julia 1.5"
     `dims` keyword was added in Julia 1.5.
 
+!!! compat "Julia 1.6"
+    `init` keyword was added in Julia 1.6.
+
 # Examples
 ```jldoctest
 julia> A = [1 2; 3 4]