DLL125

Results 2 issues of DLL125

Hi, updated Zlib from 1.3 to latest 1.3.1 and I also updated the VeraCrypt copyright in the ReadMe.md Cheers!

Hello @idrassi Would it be possible to replace PBKDF2 with the more secure argon2 (I suppose Argon2id would be the best in this case) I know you've answered this question...