Commits
François Saint-Jacques authored and Wes McKinney committed d0d810bc589
ARROW-4546: Update LICENSE.txt with parquet-cpp licenses - Ported parquet-cpp external license references - Removed spurious duplicates (boost, mapbox) Author: François Saint-Jacques <fsaintjacques@gmail.com> Closes #3692 from fsaintjacques/ARROW-4546-parquet-license and squashes the following commits: a5aa81e48 <François Saint-Jacques> ARROW-4546: Update LICENSE with parquet-cpp licenses