Subsequent POST request with different request body will not get recorded

[Kastet]

Hello,

Use case

1. Log in with an incorrect password, expect an error message, dismiuss the message
2. Log in with the correct password, expect to be in logged in state

Problem

The subsequent request/response won't get recorded in the trace file because Succulent doesn't look at POST body and won't see the the subsequent request as a different request.

[romainbiard]

same issue

[TomCarey]

Right, whilst not quite the same as comparing the request body, I've made a PR to consider subsequent posts as being different from each other. Any chance you could give this branch a test in your setup and let me know if it made things better or worse #13