Mutating Ops

[FintanH]

As discussed in #72 it can be perceived as weird by users that a function such as Orswot::add does not actually add to the underlying set.

For example, if I were to call add followed by read the addition would not be seen on my side. One idea would be to have another function called apply_add that mutates the underlying set as well as outputting the Op to write to a log/broadcast the changes.

[dan-da]

or perhaps just rename Orswot::add to Orswot::mk_add_op() or something like that.