* Add callTick and stream cancellation tests.
* Fix stepsAsync() test.
* Cancellation changes.
* Update and add more cancellation tests.
* Fix Posix shutdown call to handle ENOTCONN error.
* With new changes to to cancellation its now possible.
* Refactor testsoon.nim to not produce artifacts after tests are finished.
* Debugging MacOS issue.
* Adjust flaky test times.
* Fix issue.
* Add test for issue #334 which was also addressed in this PR.
Avoid `break` in problematic test.
* Add noCancelWait() call which prohibits cancellation.
Fix closeWait() calls to use noCancelWait() predicate.
Adding sleep to flaky MacOS test.
* Remove all debugging echoes.
* Fix cancelAndWait() which now could perform multiple attempts to cancel target Future (mustCancel behavior).
* Fix issues revealed by switch to different cancelAndWait().
* Address review comments.
* Fix testutils compilation warning.
* Rename callTick() to internalCallTick().
* Add some documentation comments.
* Disable flaky ratelimit test.
* Rename noCancelWait() to noCancel().
Address review comments.
* Allow passing in trustAnchors to newTLSClientAsyncStream
* Store X509TrustAnchors in a memory-secure, but memory-friendly way
* Remove forgotten import
* Change some waitFor to await in tests; add comment about trustAnchors reuse
* Remove use of result in newTrustAnchorStore
* Address #329.
* Refactor AsyncStreamReader/Writer `state` helper functions.
Fix some compilation warnings in `debugutils`.
Add multiple writes into test to check consistency.
* Fix Linux issue.
Fix warnings.
* Fix some warnings messages.
* More warning fixes.
* Address review comments.
Fix MacOS issues.
* More warning fixes.
* More Windows specific fixes.
* Fix macos and windows warnings.
* Fix warnings in timer.nim
Refactor to remove `result`.
Improve performance and behavior of timer to string procedure.
Add tests.
Fix async streams issue with replacing state.
Add `closing` states to HTTP's server connection, request and bodyrw.
Fix Http server cancellation leaks.
1. Implement all read() primitives using readLoop() like it was done in streams.
2. Fix readLine() bug.
3. Add readMessage() primitive.
4. Fixing exception hierarchy, handling code and simplification of (break/continue + exception).
5. Fix TLSStream closure procedure.
6. Add BoundedStream stream and tests.
7. Remove `result` usage from the code.