Release Notes: add note on breaking FSharp.Core dependency version change

RELEASENOTES.md

@@ -2,6 +2,7 @@
 * BREAKING: drop obsolete functionality (which has been marked as obsolete for a while)
 * BREAKING: drop support for .Net 3.5 and PCL profiles
 * BREAKING: F#: drop support for .Net 4.0 and PCL profiles
+* BREAKING: F#: depends on FSharp.Core 4.2.3
 * Explicit builds for .Net Framework 4.0 and higher and for .Net Standard 1.3 and 2.0
 * F#: explicit builds for .Net Framework 4.5 and higher and for .Net Standard 1.6 and 2.0
 * Assemblies are now code-signed with an X.509 certificate, using SHA2-256 hashes

src/FSharp/FSharp.fsproj

@@ -25,6 +25,7 @@
     <PackageReleaseNotes>BREAKING: drop obsolete functionality (which has been marked as obsolete for a while)
 BREAKING: drop support for .Net 3.5 and PCL profiles
 BREAKING: F#: drop support for .Net 4.0 and PCL profiles
+BREAKING: F#: depends on FSharp.Core 4.2.3
 Explicit builds for .Net Framework 4.0 and higher and for .Net Standard 1.3 and 2.0
 F#: explicit builds for .Net Framework 4.5 and higher and for .Net Standard 1.6 and 2.0
 Assemblies are now code-signed with an X.509 certificate, using SHA2-256 hashes

src/Numerics/Numerics.csproj

@@ -25,6 +25,7 @@
         <PackageReleaseNotes>BREAKING: drop obsolete functionality (which has been marked as obsolete for a while)
 BREAKING: drop support for .Net 3.5 and PCL profiles
 BREAKING: F#: drop support for .Net 4.0 and PCL profiles
+BREAKING: F#: depends on FSharp.Core 4.2.3
 Explicit builds for .Net Framework 4.0 and higher and for .Net Standard 1.3 and 2.0
 F#: explicit builds for .Net Framework 4.5 and higher and for .Net Standard 1.6 and 2.0
 Assemblies are now code-signed with an X.509 certificate, using SHA2-256 hashes