Meltano

---

New

- [2433](https://gitlab.com/meltano/meltano/-/issues/2433) Add `datamill-co` variant of `target-postgres`
- [2425](https://gitlab.com/meltano/meltano/-/issues/2425) Add `transferwise` variant of `target-postgres`
- [2404](https://gitlab.com/meltano/meltano/-/issues/2404) Add `singer-io` variant of `tap-recharge`
- [2410](https://gitlab.com/meltano/meltano/-/issues/2410) Add `transferwise` variant of `tap-postgres`
- [2411](https://gitlab.com/meltano/meltano/-/issues/2411) Add `transferwise` variant of `tap-mysql`
- [2407](https://gitlab.com/meltano/meltano/-/issues/2407) Refactor discovery.yaml to keep things in lexicographically ascending order and in correct format
- [2435](https://gitlab.com/meltano/meltano/-/issues/2435) Add new `stringify` setting `value_post_processor` that will convert values to their JSON string representation
- [2437](https://gitlab.com/meltano/meltano/-/issues/2437) Add `meltano invoke` `--dump` option with possible values `config` and `catalog` (for extractors) to dump content of plugin-specific generated file

Changes

- [2368](https://gitlab.com/meltano/meltano/-/issues/2433) Make `datamill-co` variant of `target-postgres` the default instead of `meltano`

Fixes

Breaks

---

New

- [2374](https://gitlab.com/meltano/meltano/-/issues/2374) Add `target-bigquery` discoverable plugin definition
- [1956](https://gitlab.com/meltano/meltano/-/issues/1956) Add support for Python 3.8

---

New

- [2368](https://gitlab.com/meltano/meltano/-/issues/2368) Add `transferwise` and `datamill-co` variants of `target-snowflake`

Changes

- [2368](https://gitlab.com/meltano/meltano/-/issues/2368) Make `datamill-co` variant of `target-snowflake` the default instead of `meltano`
- [2380](https://gitlab.com/meltano/meltano/-/issues/2380) Add `target_` prefix to `namespace`s of discoverable loaders target-postgres, target-snowflake, and target-sqlite

Fixes

- [2373](https://gitlab.com/meltano/meltano/-/issues/2373) `meltano init` emits warning instead of failing when underlying filesystem doesn't support symlinks
- [2391](https://gitlab.com/meltano/meltano/-/issues/2391) Add missing `max_workers` setting to `tap-salesforce` discoverable plugin definition
- [2400](https://gitlab.com/meltano/meltano/-/issues/2400) Constrain Airflow installation to specific set of known-to-work requirements to prevent it from breaking unexpectedly

---

Changes

- [2057](https://gitlab.com/meltano/meltano/-/issues/2057) Bump Airflow version to 1.10.12
- [2224](https://gitlab.com/meltano/meltano/-/issues/2224) Delete (if present) and recreate virtual environments for all plugins when running meltano install.

Fixes

- [2334](https://gitlab.com/meltano/meltano/-/issues/2334) Omit keys for settings with `null` values from `config.json` files generated for taps and targets, to support plugins that check if a config key is present instead of checking if the value is non-null.
- [2376](https://gitlab.com/meltano/meltano/-/issues/2376) Fix `meltano elt ... --transform={run,only}` raising `PluginMissingError` when a default transform for the extractor is discoverable but not installed
- [2377](https://gitlab.com/meltano/meltano/-/issues/2377) Ensure arbitrary env vars defined in `.env` are passed to invoked plugins

---

New

- [2134](https://gitlab.com/meltano/meltano/-/issues/2134) Let different variants of plugins be discovered and let users choose which to add to their project

Changes

- [2112](https://gitlab.com/meltano/meltano/-/issues/2112) Stop inheriting Meltano venv when invoking Airflow

Fixes

- [2372](https://gitlab.com/meltano/meltano/-/issues/2372) Upgrade `pip` and related tools to the latest version in plugin venvs

---

Fixes

- [2360](https://gitlab.com/meltano/meltano/-/issues/2360) Remove automatic install of extractors, loaders, and transforms if they are not present.

- [2348](https://gitlab.com/meltano/meltano/-/issues/2348) Invalidate `meltano select` catalog discovery cache when extractor configuration is changed