Ballup 1.1.0

Changes

• Added support for zstd
• Made verbose output optional, as there's little use for it in automated scripts.
  Instead, tar's --totals option is now the default unless overridden.

Ballup 1.0.2

Fixes

• Parse commandline arguments correctly when the optional path value to
  --custom is omitted.

Ballup 1.0.1

Changes

• Fix up some echo statements.

Ballup 1.0.0

Features

• Create backup tarballs of a system.
• Compression with gzip, bzip2 and xz.
• Parallel compression with pigz, pbzip2 and pixz.