Expose NodeAccess as protected

Expose the nodeAccess variable to be protected so subclasses can access geometry properties of nodes

Merge pull request GIScience#3 from GIScience/nodeTagsToWayTags

Fix memory usage

Merge pull request GIScience#2 from GIScience/nodeTagsToWayTags

add support for new method

Make use of distCalc3D customizable.

In Dijkstra algorithm, assign originalEdgeId to SPTEntry

Introduce changes to support search radiuses and bearings.

Pass prevEdgeId into calcMillis

Fix turn restrictions for virtual edges

Fix turn restrictions when number of ext storages is greater than 1.

Extend RoundaboutInstruction class with bearings of exits.