cache workflow steps during parsing

cache workflow steps parsing

version 2.0 with accessors to Blue Ocean URLs

version 1.4 with rework on nested markups

version 1.3 with API for pipeline steps and rewrite of core

version 1.2 to handle stages

tag 1.1 with new API to handle list of branches, regexp and to hide t…

…echnical logs

version 1.0.1 fixing parsing issues

first stable version of logparser