Fix deprecation warning about reg-gen

[chaochungkuo]

fixed.

[sunta3iouxos]

Hi there, I still get this warning:

- taking into account chr19
/home/tgeorgom/mambaforge/envs/rgts/lib/python3.7/site-packages/rgt/THOR/MultiCoverageSet.py:164: PendingDeprecationWarning: the matrix subclass is not the recommended way to represent matrices or deal with linear algebra (see https://docs.scipy.org/doc/numpy/user/numpy-for-matlab-users.html). Please adjust your code to use regular ndarray.
  overall_coverage_strand = [[np.matrix(tmp2[0][0]), np.matrix(tmp2[0][1])],
/home/tgeorgom/mambaforge/envs/rgts/lib/python3.7/site-packages/rgt/THOR/MultiCoverageSet.py:165: PendingDeprecationWarning: the matrix subclass is not the recommended way to represent matrices or deal with linear algebra (see https://docs.scipy.org/doc/numpy/user/numpy-for-matlab-users.html). Please adjust your code to use regular ndarray.
  [np.matrix(tmp2[1][0]), np.matrix(tmp2[0][1])]]
/home/tgeorgom/mambaforge/envs/rgts/lib/python3.7/site-packages/rgt/THOR/MultiCoverageSet.py:167: PendingDeprecationWarning: the matrix subclass is not the recommended way to represent matrices or deal with linear algebra (see https://docs.scipy.org/doc/numpy/user/numpy-for-matlab-users.html). Please adjust your code to use regular ndarray.
  overall_coverage = [np.matrix(tmp[0]), np.matrix(tmp[1])]

rgt-THOR --version
1.0.0
installed via pip as commenden in the readme.io