Squashed 'lectures/' changes from 8968d42..7306843 ...

7306843 Merged in changes that were inadvertently made in a subtree clone.
ed89997 Added \alertbf and Mark George’s text highlighting macros.

git-subtree-dir: lectures
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Squashed 'lectures/' changes from 5c5fb4c..8968d42 ...

8968d42 • Forgot to remove broken chapterplusone initialisation.

git-subtree-dir: lectures
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Squashed 'lectures/' changes from 394280d..5c5fb4c ...

5c5fb4c • Fixed “class number plus one” so that it can now be passed to other macros as a numeric value.

git-subtree-dir: lectures
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Squashed 'lectures/' changes from 521754d..394280d ...

394280d • Switched XeLaTeX fonts to new University standard (Minion Pro + Open Sans).

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Squashed 'lectures/' changes from 2b1085b..521754d ...

521754d • Added an adjustment to ensure that there is always a space before the note number. Required when we have to put a % at the end of the previous line to suppress a line break that would otherwise appear in the presentation slides. (Note numbers appearing at the start of a line will be slightly indented.)

git-subtree-dir: lectures
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Squashed 'lectures/' content from commit 2b1085b ...

git-subtree-dir: lectures
git-subtree-split: 2b1085b