scmSpillover 0.1.2

• Removed the dependency on limSolve (scheduled for CRAN archival). The constrained least-squares solve in scm() is now implemented with quadprog::solve.QP(). The optimization problem (weights summing to one and non-negative) and the resulting estimates are unchanged; the previously unused lambda argument now serves as a ridge term for numerical stability.
• Added package-level, dataset, and S3-method documentation, plus runnable examples.
• Moved the raw cigs.xls data file to inst/extdata/ and dropped a stray workspace file from data/.