merged with master

issue with Scatter1/3D where we aske pareVariations when setting points errors..

merge with default

Automated merge with https://phab.hepforge.org/source/yodahg/yoda

fix issue with writer, and harmonise Scatter1,2,3D mkScatter behaviour

missed the new .cc files for Point1,2,3D

tweaks to documentation, add missing functionality for on-demand annotation…

first pass at adding parsing-on-demand of YAML annotations

remove err-breakdown-as-extra-columns functionality (for now) so we have just…

remove err-breakdown-as-extra-columns functionality (for now) so we have just…

fix encoding for the Point.pyx to work ok in python 3, plus fix printing of…

previous doesn't compile outside of lxplus because YAML::None::isSequence()…

fix bug in multi-err point reader which was not paersin Variations correctly…