Summary
- HOL-Analysis: prove that a starlike set is negligible (based on HOL Light proof ported by L. C. Paulson)
- HOL-Analysis: add measurable sets with finite measures, prove affine transformation rule for the Lebesgue measure
- HOL-Analysis: move gauges and (tagged) divisions to its own theory file
- HOL-Analysis: add cover lemma ported by L. C. Paulson