Release v0.7.0!

[mbeacom]

We are happy to announce the release of v0.7.0 of eksupgrade.

v0.7.0 Release Notes:

• Modified workflow to use new base EKS models.
• Enabled an add-on upgrade path for your cluster for the current Kubernetes version.
• Fixes issues noticed with orphaned node groups after a cluster upgrade.
• Incremental upgrade of VPC CNI add-on.
• Disable pre/post-flight checks with --disable-checks.
• Upgrade add-ons to the latest compatible version available with --latest-addons.

Additionally, more complex workflows can be achieved with the newly introduced models by constructing custom upgrade strategies programmatically.

We look forward to your feedback and recommendations to improve this project further.