added the build plan visitor interfaces, dependency sources accept the visitor
added visitor mechanics to InterceptionPlan
BuildPlan accepts the visitor correctly
added the TextTreeWriter for diagnostic purposes
ConcreteBuild accepts the build plan visitor
constructor string visualization
first set of successful tests for the BuildPlan visualization
build plan visualization of simple ctor args
build plan visualization of simple ctor and setter args
improved the dependency visualization, added plan visualization to build plan errors.  Closes GH-172, Closes GH-173
added inline referenced dependencies to the visualization
added visualization of inline 'all possible' enumerables
introduced the ILeftPadding interface and simple impl's
converted ITabbedLines to use the new ILeftPadding
can kinda sorta render deep inline build plan dep's
ugly visualization of inline enumerable dependencies
the new TreeWriter
build plan visualization is successfully using the new TreeWriter
decorator interceptors are reflected in the build plan visualizer
fixed up one file after rebasing on Frank's PCL changes