Changes in version 1.0.1 (2026-04-28) - CRAN resubmission. Addresses reviewer feedback: - Added a reference to Hinze and Paterson (2006) doi:10.1017/S0956796805005769 in DESCRIPTION. - Added missing \value tag for print.flexseq(). - Removed \dontrun{} example wrappers from internal helpers. - Removed the plot() in favor of plot_structure() as part of the developer API. - Added inst/CITATION with a Zenodo DOI for the package. Changes in version 1.0.0 - First CRAN submission. - flexseqs: list-like sequences with push/pop/peek from either end, indexed and named access, insertion, splitting, and concatenation. - priority_queues, ordered_sequences, interval_indexes: finger-tree-backed structures for min/max-by-priority, sorted-by-key, and interval-overlap queries. - Developer API for building custom structures via monoid/measure combinations. - Core operations implemented in C++ via Rcpp, with matching pure-R reference implementations using lambda.r.