Documentation for --skip is incorrect

[Nemo157]

The documentation claims that it takes a "Space-separated list of features to skip", but it actually appears to want a comma-separated list:

> cargo hack --skip 'all all-implementations all-algorithms' --feature-powerset check
[...]
info: running `cargo check --no-default-features --features all,all-implementations,deflate,futures-bufread` on async-compression (31/4097)
[...]

> cargo hack --skip 'all,all-implementations,all-algorithms' --feature-powerset check
[...]
info: running `cargo check --no-default-features --features deflate,futures-write,lzma` on async-compression (23/513)
[...]

[taiki-e]

Published 0.3.10 which fixes this issue (space-separated list should now be handled correctly), thanks for the reporting!