fix typos
refactoring, move the marker scaling stuff out of RCSBuildAid class
rename class CoMVectors to MarkerVectos
comment++
fix RCS vectors when includeRCS is disabled
refactor, instead of having one MarkerVectors for each Marker, use one.
refactor, DisplayMode => PluginMode
comments++
reorganize all the project files, and start commiting .csproj and .cs
commit source files for Toolbar icon