modify site concordance factor to work on multifurcating trees

update latest lsd2

start unofficial release 2.0.5

IMPORTANT: Rename binary to iqtree2

support x:y date range, taxon list for MRCA and # for comments in dat…

…e file

Fix copyTree for a taxa_set to work with rooted tree properly (report…

…ed by Suha Naser)

release candidate 2.0-rc1

version 2.0-rc (release candidate)

Merge pull request #110 from fgp/fix-eigen3-include-path

Use include_directories() instead of add_definitions() to set EIGEN3_INCLUDE_DIR

start version 1.7-beta18