Support OpenSSL encryption with compression (not instead of) #133
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Plus assorted minor improvements.
The main effect of this PR is that OpenSSL encryption is now applied on top of compression, whereas previously it was synonymous with no compression. I contemplated adding yet another command line option to work around this behavior change but then decided that in the end, compression is a Good Thing and if some users want to encrypt their archives without compressing they can use
--nocomp
option explicitly instead of relying on a unintended side effect of previous implementation.That said, while I see this as a minor breaking change it is still a change. If you think it is a Bad Thing I'm open to working around this issue.