Initiate trees

## 
## Attaching package: 'testthat'
## The following objects are masked from 'package:magrittr':
## 
##     equals, is_less_than, not

Load a tree template from the package.

path_dtree <- system.file("raw data/LTBI_dtree-cost_SIMPLE.yaml", package = "treeSimR")
osList <- yaml.load_file(path_dtree)