Squashed commit of the following:

commit 1646c309
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Thu Jul 27 15:27:24 2023 +0100

    Adjust formatting in secondary notebooks

commit 3381ee2d
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Thu Jul 27 15:19:26 2023 +0100

    Adjust titling and formatting in main notebook

commit 2fb2e99f
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Thu Jul 27 13:47:24 2023 +0100

    Change tabs to spaces in notebooks

commit e9dc188d
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 17:11:01 2023 +0100

    Import charact curves plot from new notebook and remove redundant from old

commit ef7d3ae4
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 17:04:51 2023 +0100

    Copy characteristic curves plots to new notebook and integrate into build'

commit 98a0dd21
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 16:57:56 2023 +0100

    Remove redundant example code in main notebook

commit 99976ab1
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 16:52:53 2023 +0100

    Import examples from new notebook instead

commit eac837dd
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 16:47:53 2023 +0100

    Copy recurring examples to separate notebook and integrate into build

commit 1abd1b8f
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 16:33:14 2023 +0100

    Small reorganisation of notebook

commit 2aff2908
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 14:57:22 2023 +0100

    Correct missing imports from previous commits'

commit 48f747d5
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Wed Jul 26 14:11:25 2023 +0100

    Import sage expressions from external script

commit ee88d79f
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 23:03:48 2023 +0100

    Refactor extravagant example into notebook

commit 96b9b38d
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 22:56:42 2023 +0100

    Refactor recurring example into notebook

commit 5be4f14f
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 21:54:24 2023 +0100

    Use imports from notebook pt4

commit 92295236
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 21:51:32 2023 +0100

    Use imports from notebook pt3

commit 1eeb885e
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 21:48:06 2023 +0100

    Use imports from notebook pt2

commit 93b6dcbf
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 21:45:43 2023 +0100

    Use imports from notebook pt1

commit efccff7f
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 17:06:28 2023 +0100

    Adjust Makefile to create correct python library

commit 75552ca3
Author: Luke Naylor <l.naylor@sms.ed.ac.uk>
Date:   Tue Jul 25 16:47:37 2023 +0100

    Add jupyter notebook with most of sagetex scripts