0.3.4 features and bugfixes
     *) Validate paste size and content as non-binary before sending; user is
        prompted Y/N to override for huge pastes or binary content.
     *) Added options --printonly and --confirm to show or ask user before sending
     *) --sysinfo updated: Added blkid, top CPU hogs, top memory hogs, X errors,
        h/w virtualization, 64-bit capable, and last few reboot/runlevel changes
     *) Workaround to read user input from raw_input following sys.stdin EOF
     *) Guess language syntax from common file extension(s)
     *) --help usage compacted and grouped
     *) Check that 'xsel' is installed for clipboard input support; silent fail on output
     *) Use 'fpaste/x.x.x' User-agent header
     *) bug fixes