## Changes
Reformat variable regex in Python code to follow Golang. The effective
regex is not changed.
## Why
We need to keep both regexes in sync.
## Tests
Using existing tests and manually inspecting resulting regex.
## Changes
Add databricks.bundles.core package to experimental/python.
It contains an implementation of resource-independent code for Python
support. As a follow-up, we will add Python code generated using bundle
schema.
## Tests
Unit tests
Gleb Kanterov