When using non-default constructors for the API parameter classes,
vector arguments like coordinates and hints are copied at least once
(twice when passed as lvalue arguments).
Enable perfect forwarding of BaseParameter arguments and
pass-by-value in the constructor that uses the argument. This
ensures we copy at most once (zero for rvalue arguments).
* add a multiplier to the matrix
* add rounding
* remove scale_factor restrictions
* clamp for overflow error
* update check to match error message
* enforce clamping on < 0 and increase test coverage
* add an invalid scale_factor value to node tests
* increase test coverage
* changelog
* fix incorrect parameter parsing for node osrm and add tests
* fix boost spirit grammar parsing for annotations
* return NotImplemented when distance annotation is requested for MLD in table plugin
* update docs
