* refactor py-config to use toml
* switch from toml to json and add unit tests
* fix test for py-config
* fix integration test
* use flat structure for JSON
* allow merging configs
* replace arrays instead of concatenating them
* remove extra keys from inline config of integration test
* simplify array replacement logic
* allow config from src to be partial as well
* add comments to unit tests
* add unit test for setting config from both inline and src
* handle parse errors + validate config supplied
* separate functions for src and inline
* suggested improvements
* show error message in red on parser error
* fix eslint
* use resolveJsonModule as true
* use default config defined as a variable without import
* remove disable eslint comment
* remove import for covfefe.json as well
* metadata injection
* add support for schema + extra keys
* use schema_version
* add integration test for py-config
* fix bug
* fix test
* remove indexURL altogether
* make jest happy
* fix create_proxy import
* check that py-config loads an older version
* add unit test
* suggested changes
* don't use /tmp because of bandit
