Add tools needed by for wrapper demo; misc category shuffling

Bugfixes

bond_statistics:
    - would fail when reading empty lines between sections
    - also added defaults to lengths/angles/dihedrals output help msg
contacts:
    - forgot to remove unused args from parser
cov_analysis:
    - fixed issue where corr_matrix_out passed w/ type LazyFile would
      fail `np.loadtxt` due to being closed.
    - however, I have no idea why the file needs to be re-read, when
      its contents are already in memory; that line can probably be
      removed, but I left it in just in case

Large update from Soohyung

 - Misc bugfixes
 - Added tooltips
 - Changed added/removed some fields from analysis forms

From Nathan:
 - meddling with style & typing of the above
 - updated tests for new args

Bugfix: duplicated option name: -cntmin

QoL: Support brace expansion in trajectory patterns.

- Enables selection of a range of trajectories via web GUI.

Resolves #14

Fix typo, hbond update from Yiwei

bugfixes, cleaning, type checking, and unit testing

Fix failed test: nested f-str not available in 3.10

Also finish the display for 'config' in -l/-c

Bugfix: inconsistent use of `-` vs. `_`.

This commit addresses #12

Comment out reference to incomplete features on home page.