change the height to be scaled height
adapt unittests to new format
undo changes of the indecies of the parents and heights to the oriented forest format
Merge branch 'master' into orientedForest
Merge branch 'master' into orientedForest
reimplement generation of OF recursively
remove fake nodes from output
added option -OR for return oriented forest with relative length, -TR for returning newick trees with relative sequence length. changed the root fake parent to be zeros
implement -SC option for choosing sequence scaling
add absolute seq scaling support for seg.sites
Merge branch 'orientedForest'

Conflicts:
	src/summary_statistics/oriented_forest.h
	tests/unittests/test_summary_statistics.cc