Move path extraction logic out of `Path` class (graphhopper#1730)

* Remove PathBidirRef#switchFromTo
* Remove unnecessary statement in edge-based CH algo
* Remove unnecessary check in AlternativeRoute
* Use dedicated path extraction class for bidir algos
* Remove PathBidirRef and subclasses
* Make AStar more similar to Dijkstra
* Move path extraction for unidir algos into new PathExtractor
* Remove extract stuff from Path class

updated README.md

Fix integer overflow in PrepareContractionHierarchies

New MaxLengthParser (graphhopper#1703)

* Add maxlength profile

* Move shared value parsing logic into helper class

* Provide a parser for OSMs maxlength tag

* Merge value extraction helper classes

/spt endpoint fix wrong var name

Add support for hgv toll sub-categories (graphhopper#1704)

Adds new fail-fast option to hand-crafted matrix client. (graphhopper…

…#1661)

Response as GeoJSON (graphhopper#1651)

* accept a new query parameter for isochrone requests called "type" and check that it is valid

* the isochrone web requests with a query parameter "type=geojson" will return a FeatureCollection

* fixed typo in copyrights

* fixed formatting

* fixed formatting

* removed leftover call to bufferEntity() and updated the copyrights

Revert "move to JDK12 and test future 13"

This reverts commit 8f54649.

client-hc: add test for optimize=true