Made HttpTransporter issue preflight request for initial PUT to init connection-based auth or to gracefully handle premature 100-continue responses

Extended GetTask to optionally carry checksums for downloaded resource and made BasicRepositoryConnector and HttpTransporter make use of it when possible

Improved robustness of expect-continue handling by ensuring user-configured "Expect" header is automatically cleared upon retry if server responded with "Expectation failed"

Made BasicRepositoryConnector only create thread pool when actually multiple requests need processing

Introduced TransferResource.getResumeOffset() to query position at which transfer started

Introduced utility WorkerThreadFactory to help with name customization and made DefaultMetadataResolver as well as BasicRepositoryConnector make use of it

Introduced AuthenticationBuilder.addHostnameVerifier()

Introduced aether-transport-http and dropped aether-connector-asynchttpclient

Moved NoTransporterException and NoRepositoryLayoutException into org.eclipse.aether.transfer package next to related NoRepositoryConnectorException