tsv_resampling memory leak

[mdahlhausen]

Running a small 100 model sample causes sampling to crash.

(comstock-sampling) C:\Users\mdahlhau\Documents\GitHub\NREL\comstock\sampling>python tsv_resampling.py v99 2018 100 1 hardsize
Preparing sampling for the following attributes: ['building_area', 'building_type', 'sampling_region', 'size_bin']
[Parallel(n_jobs=16)]: Using backend LokyBackend with 16 concurrent workers.
C:\Users\mdahlhau\.conda\envs\comstock-sampling\Lib\site-packages\joblib\externals\loky\process_executor.py:702: UserWarning: A worker stopped while some jobs were given to the executor. This can be caused by a too short worker timeout or by a memory leak.
  warnings.warn(