Timeout issue when using EventStore.read_stream_forward\3

[eamontaaffe]

I am having a few issues when trying to read a large number of events from a stream (> 1,000). Obviously, I can just reduce the number of events to read and spread it out over many requests. However sometimes, my internet isn't the best (Australian internet can be shit) and reading a small number of events (~100) also fails.

I would like to add a parameter or configuration option to the read_stream_forward method so that we can increase the GenServer.call timeout.

The attached changes do it in a pretty crude manner, but it works for my purposes. I am open to suggestions on how we can clean it up. We should also add the timeout options to other similar methods such as EventStore.read_all_streams_forward.

[slashdotdash]

Thanks for the pull request @eamontaaffe.

You could also use EventStore.stream_forward to return an Elixir Stream of events as this won't be affected by the GenServer call timeout (5 seconds). This is typically the function I use to fetch events from a stream, rather than paging through events manually.