Latest release is missing the DLL

Describe the bug The readme.md file for both the x86 and x64 Windows versions of the latest release states that the release ZIP file contains:

The package contents

• lz4.exe : Command Line Utility, supporting gzip-like arguments
• dll\msys-lz4-1.dll : The DLL of LZ4 library, compiled by msys
• dll\liblz4.dll.a : The import library of LZ4 library for Visual C++
• example\ : The example of usage of LZ4 library
• include\ : Header files required with LZ4 library
• static\liblz4_static.lib : The static LZ4 library

But in both zip files, the DLL file is not present.

Expected behavior It is expected that a release of a library will in fact contain the library in question, particularly when the readme file says it's there.

To Reproduce Steps to reproduce the behavior:

1. Download the latest Windows release
2. Open the ZIP file
3. Look in the dll\ folder
4. Observe that the DLL is not present