Handles index errors on time range causing them to fail gracefully. Makes identifier attribute on station ids case insensitive when gathering as part of a network. Falls back to stock SensorML components when IOOS names not found. Refactors some XML finding/ XPath functionality Warn, do not automatically fail if IOOS SWE 1.0 milestone is not implemented.
…). datetime filters failed otherwise
This reverts commit c1e2ba0.