OCEAN v1.1.3

​## v. 1.1.3​​

Minor feature updates:​

1. Option to disable spin-orbit splitting from the input file
2. Code can generate its own cnbse.spect_range
3. Code detects when number of xpoints is too small compared to bands​

Under the hood​:

1. Some checks for NaN cropping up in BSE
2. Some support for FFTW instead of legacy FFT in OBF pathway
3. Some support for RIXS workflows