[#77] Set release version to 0.4.0

[elfenpiff]

Notes for Reviewer

• I followed the release tutorial in iceoryx2/doc /how-to-create-an-iceoryx2-release.md
• iceoryx2-bb-testing needed a little refactoring due to a cyclic dependency with iceoryx2-pal-concurrency-sync
  • removed the atomics and used mutex instead

Pre-Review Checklist for the PR Author

1. [x] Add sensible notes for the reviewer
2. [x] PR title is short, expressive and meaningful
3. [x] Relevant issues are linked in the References section
4. [x] Every source code file has a copyright header with SPDX-License-Identifier: Apache-2.0 OR MIT
5. [x] Branch follows the naming format (iox2-123-introduce-posix-ipc-example)
6. [x] Commits messages are according to this guideline
   • [x] Commit messages have the issue ID ([#123] Add posix ipc example)
   • [x] Commit author matches Eclipse Contributor Agreement (and ECA is signed)
7. [x] Tests follow the best practice for testing
8. [x] Changelog updated in the unreleased section including API breaking changes
9. [x] Assign PR to reviewer
10. [x] All checks have passed (except task-list-completed)

Checklist for the PR Reviewer

• [x] Commits are properly organized and messages are according to the guideline
• [x] Unit tests have been written for new behavior
• [x] Public API is documented
• [x] PR title describes the changes

Post-review Checklist for the PR Author

1. [x] All open points are addressed and tracked via issues

References

Relates to #77

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.00%. Comparing base (3a6b384) to head (475289d). Report is 5 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/407?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) ```diff @@ Coverage Diff @@ ## main #407 +/- ## ========================================== + Coverage 78.92% 79.00% +0.07% ========================================== Files 194 194 Lines 22730 22730 ========================================== + Hits 17940 17957 +17 + Misses 4790 4773 -17 ``` | [Files with missing lines](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/407?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx) | Coverage Δ | | |---|---|---| | [iceoryx2-bb/testing/src/lifetime\_tracker.rs](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/407?src=pr&el=tree&filepath=iceoryx2-bb%2Ftesting%2Fsrc%2Flifetime_tracker.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eDItYmIvdGVzdGluZy9zcmMvbGlmZXRpbWVfdHJhY2tlci5ycw==) | `85.71% <100.00%> (ø)` | | | [iceoryx2-bb/testing/src/watchdog.rs](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/407?src=pr&el=tree&filepath=iceoryx2-bb%2Ftesting%2Fsrc%2Fwatchdog.rs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx#diff-aWNlb3J5eDItYmIvdGVzdGluZy9zcmMvd2F0Y2hkb2cucnM=) | `93.33% <100.00%> (ø)` | | ... and [3 files with indirect coverage changes](https://app.codecov.io/gh/eclipse-iceoryx/iceoryx2/pull/407/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=eclipse-iceoryx)

[elBoberido]

We reached the Cirrus CI limit. Merging anyway since the github CI is our main CI.