v0.7.0

This is the release of Theodolite 0.7.0. The most important new features are:

• Theodolite now supports deploying arbitrary resources. This includes CRDs, managed by other operators.
• Strimzi is used instead of the Confluent Helm charts for managing Kafka topics.
• Before and After Actions can be used to define specific behavior to be run directly before the benchmark is started or before it is finished.
• Theodolite creates a result CSV file directly after running a benchmark. Using the analysis notebooks is now optional, e.g., to evaluate different settings or plot results.
• The initial guess strategy for running SLO experiments provides some advantages over the linear search.
• Benchmark implementations for Apache Beam were added.
• UC1 provides a generic interface for potentially different sinks (e.g., databases).
• The UC1 implementation for Apache Beam supports Google Cloud Firestore as one of these sinks.
• The load generator now exports metrics in Prometheus format (using Micrometer under the hood).
• The load generator can now generate messages via HTTP and for Google Cloud Pub/Sub.
• A HTTP Bridge was added, which receives HTTP messages from Theodolite's load generator and forwards them as Kafka messages.