What's Changed
* StructureViewer: Print 3 decimal places for distance and angles by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/495
* allow structures with different periodicity, add periodicity by AndresOrtegaGuerrero in https://github.com/aiidalab/aiidalab-widgets-base/pull/488
* Bump scikit-learn by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/498
* Make notebook tests less flaky by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/497
* Lazy import optimade_client by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/496
* Structure download section: add `extxyz` and `xsf` formats by yakutovicha in https://github.com/aiidalab/aiidalab-widgets-base/pull/501
* Add the concurrency setup to CI workflow by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/503
* Remove leftover load profile by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/481
* StructureViewer Download tab: pass file format explicitly by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/504
* Get rid of deprecation warnings in computational_resources.py by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/508
* Computer setup: Fix core.local transport by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/502
* SmilesWidget: Canonicalize SMILES code by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/507
* `CompResourcesWidget`: do not raise when computer test fails by yakutovicha in https://github.com/aiidalab/aiidalab-widgets-base/pull/506
* Fix Warning coming from ProcessFollowerWidget by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/512
* DOC: re-strucuture the doc folder by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/514
* Fix .ssh/config file not being closed by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/513
* Improve generation of tough SMILES by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/517
* Remove openbabel dependency by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/518
* Use mock home and monkeypatch ssh parser for ssh config testing by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/523
* Remove warnings in unit tests by danielhollas in https://github.com/aiidalab/aiidalab-widgets-base/pull/509
* Fix/xx/increase timeout of di test by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/529
* Template resources setting by unkcpz in https://github.com/aiidalab/aiidalab-widgets-base/pull/511
**Full Changelog**: https://github.com/aiidalab/aiidalab-widgets-base/compare/v2.0.1...v2.1.0a0