Log Message:
Changes 5.16.3:
This release contains one major and a number of minor security fixes. It fixes a \ 
possible vulnerability to a denial-of-service attack by use of a \ 
carefully-crafted set of hash keys, a segmentation fault when reading or writing \ 
strings greater than 2^31 bytes in size, and a memory leak in Encode.xs's UTF-8 \ 
encoding implementation.