Fix an issue with zipOrAccumulate with two procedures.

[rhirai-line]

PR for #111 .

I modified zipOrAccumulate with two procedures.
Previously each procedure was executed twice, but now it is executed only once.

[michaelbull]

Please can you rebase this change onto the latest commit of master (144c58e) to fix the CI issue.

[rhirai-line]

I've rebased this branch onto latest master.Thank You.

[eichisanden]

@michaelbull
I have been waiting for this Pull Request to be merged, but why was it CLOSED?

[michaelbull]

@eichisanden because it was merged into master: 03704eb

You can see it in this GitHub issues' history:

[eichisanden]

@michaelbull I thought it was not merged because the pull request is Closed, sorry!

BTW, is there a version with this fix available on maven? Is it coming?

[michaelbull]

The SNAPSHOT version is built on every commit to master, so there should be a SNAPSHOT version with the latest change in that you can use from maven central (provided you have added the snapshot repository).

You can see a full list of the snapshot versions & artifacts here

[eichisanden]

Thank you for kindly teaching me!!.