Capitalize KPM.

Implement KPM intensity formula

Add KPM element contraction.

Implement KPM intensity formula (with Sam's help).

Implement quasi-Hermitian Lanczos.

Comment test.

Finish integrating QH Lanczos.

Fix kpm test

Add plotting files.

fix plotting2d

Fix test

Fix sqrt(M) factor.

KPM fix scaling of Bose factor and regularization.

Fix repetition post refactor.

Minor edits to bring in line with new intensities.

Squashed commit bringing up to date with Sam's branch

commit f001c5e
Author: Sam Quinn <lazersmoke@gmail.com>
Date:   Sat Nov 4 11:45:44 2023 -0400

    update

commit 69ca719
Author: Sam Quinn <lazersmoke@gmail.com>
Date:   Thu Nov 2 10:53:47 2023 -0400

    update intensity_formula_kpm

commit cc34446
Author: Harry Lane <htl7@st-andrews.ac.uk>
Date:   Wed Nov 1 11:18:47 2023 +0000

    KPM fix scaling of Bose factor and regularization.

commit e3ea347
Author: Harry Lane <htl7@st-andrews.ac.uk>
Date:   Mon Oct 30 15:26:55 2023 +0000

    Remove symmetrization to get offdiag corrs.

commit 1fc1790
Author: Sam Quinn <lazersmoke@gmail.com>
Date:   Wed Nov 1 11:13:06 2023 -0400

    positive and negative frequency LSWT

commit 6558c6e
Author: Sam Quinn <lazersmoke@gmail.com>
Date:   Tue Oct 31 12:15:43 2023 -0400

    Add regularization options

commit 72e056d
Author: Harry Lane <htl7@st-andrews.ac.uk>
Date:   Mon Oct 30 15:11:27 2023 +0000

    Introduce cubic regularization.

commit cd6347e
Author: Harry Lane <htl7@st-andrews.ac.uk>
Date:   Mon Oct 30 10:31:19 2023 +0000

    Fix sqrt(M) factor.

commit 89123f2
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Mon Sep 11 23:16:50 2023 -0400

    Fix test

commit 9f522ca
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Thu Sep 7 12:18:50 2023 -0400

    fix plotting2d

commit 39ed498
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Thu Sep 7 10:03:47 2023 -0400

    Add plotting files.

commit 97549f4
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Tue Sep 5 22:29:50 2023 -0400

    Fix kpm test

commit 8694b09
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Tue Sep 5 18:40:26 2023 -0400

    Finish integrating QH Lanczos.

commit 09ac14f
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Wed Aug 30 20:39:39 2023 -0400

    Comment test.

commit 191f2f2
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Tue Aug 29 22:24:35 2023 -0400

    Implement quasi-Hermitian Lanczos.

commit e1a1375
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Fri Aug 11 15:29:34 2023 -0400

    Implement KPM intensity formula (with Sam's help).

commit be51cda
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Thu Aug 10 13:31:50 2023 -0400

    Add KPM element contraction.

commit 824ecf4
Author: Sam Quinn <lazersmoke@gmail.com>
Date:   Fri Aug 4 15:15:40 2023 -0400

    Implement KPM intensity formula

commit 6f29102
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Wed Aug 2 10:55:19 2023 -0400

    Add kpm dipole mode.

commit 1ce57e4
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Tue Aug 1 12:45:23 2023 -0400

    Capitalize KPM.

commit 951722c
Author: [Harry Lane] <[hlane34@gatech.edu]>
Date:   Tue Aug 1 12:14:56 2023 -0400

    KPM Implementation.

Remove redundant `intensity_formula`

patch `intensity_formula_kpm` to not depend on omega

Add susceptibility regularization style

Rebased onto inhomog_lswt and fix ref to rots

Take max(abs()) for Lanczos.