Potential bug in /sharpy/structure/utils/modalutils.py

[LeeElvis]

Describe the bug
Hi, there exists a small bug at line 289 in /sharpy/structure/utils/modalutils.py:
for mode in range(num_rigid_body, NumLambda - num_rigid_body): should be for mode in range(num_rigid_body, NumLambda ).
Thank you.

[LeeElvis]

Hi, another potential bug was found in sharpy/postproc/aeroforcescalculator.py, the function of file_output: force_matrix and moment_matrix are mismatched with the following code in that function, which may cause confusion in the output file 'aeroforces.txt'.
Thank you.

[sduess]

Thanks @LeeElvis for spotting that. Both have recently been fixed in #273.