bump versions, add dialect to release profile (#230)
bump versions, add dialect to release profile (#230)

Preparing for 0.2.0 release:

bumped dependency versions.
added dialect to the release profile so it actually gets released
removed the non-profile modules section that keeps popping up.
GoogleCloudPlatform/cloud-spanner-r2dbc,GoogleCloudPlatform/cloud-spanner-r2dbc,GoogleCloudPlatform/cloud-spanner-r2dbc