[feature request] Allow disabling the compression

[apcamargo]

Sometimes I'm trying to send a pre-compressed file and Portal spends a lot of time to re-compress it in the sender and decompress in the receiver. Would it be possible to disable compression when sending a single file?

[mellonnen]

Great Suggestion!

Adding support for configuring what compression algorithm to use has previously been discussed in #85, and it would be possible to add an option for disabling the compression in a similar way. However, this would likely be a breaking change and not available until the next major release.