[JUJU-1582] Release 3.0.0 notes

[cderici]

Tuesday August 9 2022

What's Changed

Switching to semantic versioning. From this release on, at least the major release number matches
the most recent Juju supported. Hence the jump to 3.0.0 since this release supports Juju 3.0.
(This also means that python-libjuju <= 2.9.11 only support up to Juju 2.x)

• JUJU-1439 Initial fixes for test_model to pass with juju 3.0 by @cderici in [JUJU-1439] Initial fixes for test_model to pass with juju 3.0 #689
• JUJU-1464 More fixes for 3.0 compatibility by @cderici in [JUJU-1464] More fixes for 3.0 compatibility #691
• JUJU-1457 Merge 3.0 compatibility branch onto master by @cderici in [JUJU-1457] Merge 3.0 compatibility branch onto master #692
• Fix conditional by @sed-i in Fix conditional #696
• JUJU-1534 Fix model.connect_current() by @cderici in [JUJU-1534] Fix model.connect_current() #697
• JUJU-1542 Fix run actions on units by @cderici in [JUJU-1542] Fix run actions on units #698
• JUJU-1577 Replace k8s bundles with machine bundles for tests by @cderici in [JUJU-1577] Replace k8s bundles with machine bundles for tests #703
• JUJU-1528 Add storage implementation by @cderici in [JUJU-1528] Add storage implementation #701

[cderici]

/build

[cderici]

/build

[jameinel]

This looks like just a version bump and release notes. I'm not deeply aware of the changes to speak to whether anything is there or missing. But if you've already discussed it with Juan

[cderici]

/merge