- R/get_correction_factors.R: check_tree()
  We now check that trees include the corner's center in their plot area and
  otherwise assign a correction factor of 0.
  Such trees occur when the diameters where not measured at  breast height and
  got corrected. Otherwise, `bwi2022de` would have complained about them being
  invalid sample trees.

`select_valid_angle_count_trees()` now removes trees with a diameter at breast height greater than zero and a distance of 0

 These tree should not be there.
 Gerald/grenzkreis give a warning, but assign a correction factor >= 1.
 Probably, these trees get filter out somewhere down the food chain.
 We assign a correction factor of 0 instead of only issue a warning.

 # treePlotArea 1.1.0

* We are now deleting boundaries that happen to run through a tract's corner.
  It's not even clear how we would define `stand` if such a boundary would be
  valid.
* `get_corrections_factors()` now adds status codes and info to the output.
* Added testing suite for internal function `get_corrections_factor`, which is
  the main work horse in the package (to which `get_corrections_factors()` is
  just a wrapper looping over the trees.
* Added verbosity to internal function `secant_intersection()` to not throw
  warnings all over the place.

and plot the tree's location in cyan.

 # treePlotArea 0.5.0