v0.6.1: improve field indexer for layered solid elements (#515) * Fix Field Indexer and get_element_indices for layered solids and add example of a thermal analysis (#512) * Fix Field Indexer by distinguish between fields with data pointers and without Add draft of an example for a thermal analysis * Bump version 0.6.1 --------- Signed-off-by: dependabot[bot] <[email protected]> Co-authored-by: Dominik Gresch <[email protected]> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>