Infinite stream loops

[mikabytes]

Describe the bug
When two streams make requests from each other, either directly or indirectly by third party, an endless loop can occur which causes the app to freeze, or downloads to happen perpetually.

To Reproduce
Create two streams. Make stream1 fetch something from stream2, and then stream2 should fetch from stream1. Witness madness and chaos occur.

You may also insert an intermediate stream(s), such that stream1 -> stream2 -> stream3 -> stream1

Expected behavior
After 3 rounds Tiden should crash the first offending stream, and provide an error message

Desktop (please complete the following information):
all

Smartphone (please complete the following information):
all

Additional context
As discussed in #14