Splitgraph

* Various fixes to CSV inference and querying (https://github.com/splitgraph/sgr/pull/433)
* Add customizable fetch size to the Snowflake data source (https://github.com/splitgraph/sgr/pull/434)
* Fix issue with changing the engine password (https://github.com/splitgraph/sgr/pull/437)
* Data source refactor (https://github.com/splitgraph/sgr/pull/438):
* MySQL: parameter `remote_schema` has been renamed to `dbname`
* Mongo: parameter `coll` has been renamed to `collection`; `db` to `database`
* Table options are now a separate parameter that is passed to the
* Introspection now returns a dictionary of tables and proposed table options OR error classes for tables that we weren't able to introspect (allowing for partial failures)
* Mounting can now return a list of mount errors (caller can choose to ignore).
* CSV data source: allow passing a partially initialized list of table options without a schema, making it introspect just those S3 keys and fill out the missing table options.
* Postgres-level notices are now available in the `PsycopgEngine.notices` list after a `run_sql` invocation.
* Multicorn: fix bug where server-level FDW options would override table-level FDW options.

Full set of changes: [`v0.2.12...v0.2.13`](https://github.com/splitgraph/sgr/compare/v0.2.12...v0.2.13)

* Fixes to the Snowflake data source (https://github.com/splitgraph/sgr/pull/421)
* Add automatic encoding, newline and dialect inference to the CSV data source (https://github.com/splitgraph/sgr/pull/432)

Full set of changes: [`v0.2.11...v0.2.12`](https://github.com/splitgraph/sgr/compare/v0.2.11...v0.2.12)

* Snowflake data source improvements:
* Allow passing envvars to set HTTP proxy parameters, fix incorrect query string generation when passing a warehouse (https://github.com/splitgraph/sgr/pull/414, https://github.com/splitgraph/sgr/issues/413)
* Support for authentication using a private key (https://github.com/splitgraph/sgr/pull/418)
* Splitfiles: relax AST restrictions to support all SELECT/INSERT/UPDATE/DELETE statements (https://github.com/splitgraph/sgr/issues/411)
* Change the default installation port to 6432 and handle port conflicts during install (https://github.com/splitgraph/sgr/issues/375)
* Add retry logic to fix registry closing the SSL connection after 30 seconds, close remote connections in some places (https://github.com/splitgraph/sgr/pull/417)

Full set of changes: [`v0.2.10...v0.2.11`](https://github.com/splitgraph/sgr/compare/v0.2.10...v0.2.11)

* Fix CSV schema inference not supporting BIGINT data types (https://github.com/splitgraph/sgr/pull/407)
* Fix Splitfiles only expecting tags to contain alphanumeric characters (https://github.com/splitgraph/sgr/pull/407)
* Speedups for the Snowflake / SQLAlchemy data soure (https://github.com/splitgraph/sgr/pull/405)

Full set of changes: [`v0.2.9...v0.2.10`](https://github.com/splitgraph/sgr/compare/v0.2.9...v0.2.10)

* Add a Snowflake data source, backed by a SQLAlchemy connector (https://github.com/splitgraph/sgr/pull/404)

Full set of changes: [`v0.2.8...v0.2.9`](https://github.com/splitgraph/sgr/compare/v0.2.8...v0.2.9)

* Allow deleting tags on remote registries (https://github.com/splitgraph/sgr/pull/403)

Full set of changes: [`v0.2.7...v0.2.8`](https://github.com/splitgraph/sgr/compare/v0.2.7...v0.2.8)