Include momentum in error estimation of the EigenStepper

See merge request !791

Bump required boost version to 1.69

See merge request !792

Seedfinder test: specify input file on command line, quiet output

See merge request !784

Remove redundant geometrySignature

Closes #709

See merge request !787

Abort propagation when an interaction kills a particle

Closes #697

See merge request !782

Promote Polyhedron to Surface base class

Closes #705

See merge request !777

Implement AdaptiveMultiVertexFinder

Closes #691

See merge request !772

introduce option to use full vertex covariance for IP estimation and remove unique_ptr for TrackToVertexIPEstimator return value

add two methods to add and remove single vertex from fitter state multiMap as opposed to update entire map every single time

use references instead of pointers for KalmanUpdaters, use VertexSmoothing properly without TracksAtVertex