Change np.NaN to np.nan for numpy 2.0.0 compatibility

Merge pull request #32 from moflaher/newversionstring

Fix version string to satisfy PEP440

Fix URL to Rich's webpage

Merge pull request #24 from krassovski/master

Fix for outputting the analysis results to a file

Merge pull request #22 from mdunphy/speedups

A few optimisations for t_vuf and t_getconsts

Merge pull request #21 from mdunphy/fix_rcond

Add explicit rcond=None to np.linalg.lstsq calls.

Merge pull request #20 from mdunphy/xout_fix

Fix output xout,xres when using nodal corrections and synth>=0.

Merge pull request #19 from mdunphy/fix_dtype_comparison

Merge pull request #18 from mdunphy/fix_t_predic

Change "is" to "==" in t_time inspection