renaming and slight refactor

[jkingslake]

Before we go too much further with this package, I think we should do a little refactoring and rename some important things.

• I think we should rename the whole package XApRES (or ApyRES). The current name (xapres_package), was just something i chose to experiment with making a package. We should change it.
• We should move load_single, load_dat_file, and list_files out of xapres, but still in ApRESDefs.
• Remove load_all and put its functionality into xapres.__init__. So creating a new xapres is the same as running load_all is currently.
• We should change the name of ApRESDefs to load or something similar. Most of the functionality in there is about loading data (and see next point for other functionality).
• We should move the coherence and generate_range_diff functions to a separate library, maybe called 'proc' for processing, or something similar.
• at the end of xapres.__init__ add in the .sonify and .dB methods to the opened xapres. I think this will involve moving the definitions of sonify and dB out of load_zarr

@glugeorge @Elizabethcase , what do you think?

[Elizabethcase]

Agree re: renaming package. The sooner the better.

Different libraries could be: load, plot, preprocess (remove noisy chirps, chop clipped signal, check for clippping, etc), processing (could be broken up into time analysis, polarmetric, repeat, and cmp libraries)

[jkingslake]

many of these changes are in PR #35. I did not remove load_all, but I did add a wrapper around the who class, which is attempted to solve the same problem that removing load_all was; i.e. making it simpler to make xarrays from dat files without necessarily having to do the whole OO thing of initializing an object then running its methods.

#35 does not change the name of the package, but we should do that next.

[jkingslake]

#35 does now change the name of the package to xapres.

and #35 has been merged, so I will close this issue