Goth

Bugfixes
- updated default mount point for `yagna` provider image cache [c546dd2](https://github.com/golemfactory/goth/commit/c546dd2b8eafe4bd65e782f2d73e60d5b6136eec)

Breaking changes
- removed `ProviderLogMixin`, provider log assertions have been moved to `yagna` repo tests [514](https://github.com/golemfactory/goth/pull/514)

Breaking changes
- changed regex used for waiting on `yagna` REST API to come online (compatible with `yagna` 0.7+) [508](https://github.com/golemfactory/goth/pull/508)

Features
- pinned specific revision of `debian` Docker image to be used as base in default Dockerfiles [c31288e](https://github.com/golemfactory/goth/commit/c31288edbb3e45235877b0674d36104d8b4a2af3)

Features
- enabled setting environment variables through `goth-config.yml` [505](https://github.com/golemfactory/goth/pull/505)
- added generic `wait_for_log` step to provider probe [434](https://github.com/golemfactory/goth/pull/434)

Breaking changes
- removed `yagna` integration tests from the repo [503](https://github.com/golemfactory/goth/pull/503)

Features
- added `poe` job for running `goth` interactive mode [bde7d5f](https://github.com/golemfactory/goth/commit/bde7d5faca9570af3455bd56c738c385ecd760a0)

Other changes
- updated `GETH_ADDR` env variable in `yagna` nodes started by `goth` [504](https://github.com/golemfactory/goth/pull/504)