Version 1.7.11, 2008-09-11
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* Added the Salsa20 stream cipher
* Optimized Montgomery reduction, Karatsuba squaring
* Added 16x16->32 word Comba multiplication and squaring
* Use a much larger Karatsuba cutoff point
* Remove bigint_mul_add_words
* Inlined several BigInt functions
* Add useful information to the generated build.h
* Rename alg_{ia32,amd64} modules to asm_{ia32,amd64}
* Fix the Windows build

