Fixes
* Allow the HDF filename to be passed to main function instead
  of only io_manager instance.  Having main only accept io_manager
  broke all ipython notebooks.
* Removed "print(table)" from readUCI which I think was a
  debugging statement.
IPython Notebook Fixes
* Edited some of the ipython notebooks that tried to find an
  element time-series with an old name, for example tried to
  find "SURO" instead of the new name "SURO_sum".
* Edited some of the ipython notebooks so that filenames were
  case sensitive.
Deprecations
* The append function is no longer available for DataFrames and
  changed to pd.concat form.
* In pandas 3.0, to_hdf will require the "key" to be a keyword
  argument instead of a positional argument and made that change
  now to silence the deprecation message.
Format
* Removed trailing spaces from some files.
* Fixed not a multiple of 4 spaces indentation in at least one file.
* Renamed files with spaces in their names, replacing spaces with "_".
Documentation
* Additional edits to the README.rst.
* Reshaped some docstrings into Numpy format.

…e other action to test 3.11

Cleanup actions

…s with undefined variables, as noted in PR respec#159.

…ease, for GENER operations and outputting mean values

misc fixes...
Merging this one in, will have a few touch-ups afterward to resolve this append/concat issue.

pyproject.toml -- attempt to add version dependency for pandas

…inning to allow test; TODO: refactor readUCI for pandas>=2

…aths at the end of gitignore

…nyones long-running hspf job

…ch room for improvement

…>2.0