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