Range type must use immutable references due to a regression in `boost::any_range`. References: https://svn.boost.org/trac10/ticket/10493 https://stackoverflow.com/questions/42427395/boostany-range-with-optimization-level-o2-causes-crash/42427662  | 
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| .. | ||
| alternative_path.hpp | ||
| direct_shortest_path.hpp | ||
| many_to_many.hpp | ||
| map_matching.hpp | ||
| routing_base_ch.hpp | ||
| routing_base_mld.hpp | ||
| routing_base.hpp | ||
| shortest_path_impl.hpp | ||
| shortest_path.hpp | ||
| tile_turns.hpp | ||