Olympian release (v1.5.0)

This release solves the issue in the previous release (1.0.0) where the user could not make a proper commit history if he has more than one files to be encrypted in his repo. Here instead of generating iv in each encryption (or push), I am generating the iv only once (for the first time or the times ). Doing this doesn't generate a new encryption pattern each time and thus all the files which are to be encrypted would not get changed only those whose content has been changed would be

Does this reduces the security?

No, It doesn't reduce the security because the encrypted file is compressed and thus recognizing the pattern is not possible.