draft export of tmrca statistic
export segsites to R

this version has a strange (memory) bug, where the seg.sites statistic
is not created in the unittest for the last few examples, but the
exactly same command work perfectly before...
update script to copy only .cc and .h file
update scrm's source
Merge branch 'master' into r_sum_stats
increase version number
use own to_string implementation on win
remove debug summary statistic
reset version number to 1.2-0
update scrm version
fix typo in compile flag
update scrm version
fix cleanup
move summary statistic creating into new file
update source
implement tmrca export
implement import of newick trees
add oriented forest
implement export of site frequencies
update documentation