Replace throws -> raises

[james-d-mitchell]

No description provided.

[Joseph-Edwards]

This looks good to me, though there are some more examples of "throws" in forest.cpp and present.cpp. If we could make the same changes in these files, then I would be happy to merge. Thanks @james-d-mitchell!

[james-d-mitchell]

Done, okay to merge @Joseph-Edwards

[Joseph-Edwards]

I've just spotted some more (and not sure how I didn't see these earlier, sorry!):

> rg throws
docs/source/data-structures/presentations/to-present.rst
75:This function throws a :any:`LibsemigroupsError` if the type of words in *p* is
77:``p.throw_if_bad_alphabet_or_rules()`` throws.
131:This function throws a :any:`LibsemigroupsError` if
132:``p.throw_if_bad_alphabet_or_rules()`` throws, or if the function specified by

docs/source/data-structures/presentations/to-inverse-present.rst
56:This function throws a :any:`LibsemigroupsError` if
57:``p.throw_if_bad_alphabet_or_rules()`` throws.
122:This function throws a :any:`LibsemigroupsError` if the type of words in *ip* is
124:``p.throw_if_bad_alphabet_rules_or_inverses()`` throws.
180:This function throws a :any:`LibsemigroupsError` if
181:``ip.throw_if_bad_alphabet_rules_or_inverses()`` throws, or if the function

docs/source/main-algorithms/froidure-pin/to-froidure-pin.rst
55:This function throws a :any:`LibsemigroupsError` if ``cong.kind`` is not
98:This function throws a :any:`LibsemigroupsError` if the
148:This function throws a :any:`LibsemigroupsError` if ``kb.kind()`` is not
192:This function throws a :any:`LibsemigroupsError` if ``tc.kind()`` is not
260:This function throws a :any:`LibsemigroupsError` if
261:``throw_if_image_value_out_of_range`` throws for any of the constructed

After those, we can merge

[james-d-mitchell]

I've just spotted some more (and not sure how I didn't see these earlier, sorry!):

> rg throws
docs/source/data-structures/presentations/to-present.rst
75:This function throws a :any:`LibsemigroupsError` if the type of words in *p* is
77:``p.throw_if_bad_alphabet_or_rules()`` throws.
131:This function throws a :any:`LibsemigroupsError` if
132:``p.throw_if_bad_alphabet_or_rules()`` throws, or if the function specified by

docs/source/data-structures/presentations/to-inverse-present.rst
56:This function throws a :any:`LibsemigroupsError` if
57:``p.throw_if_bad_alphabet_or_rules()`` throws.
122:This function throws a :any:`LibsemigroupsError` if the type of words in *ip* is
124:``p.throw_if_bad_alphabet_rules_or_inverses()`` throws.
180:This function throws a :any:`LibsemigroupsError` if
181:``ip.throw_if_bad_alphabet_rules_or_inverses()`` throws, or if the function

docs/source/main-algorithms/froidure-pin/to-froidure-pin.rst
55:This function throws a :any:`LibsemigroupsError` if ``cong.kind`` is not
98:This function throws a :any:`LibsemigroupsError` if the
148:This function throws a :any:`LibsemigroupsError` if ``kb.kind()`` is not
192:This function throws a :any:`LibsemigroupsError` if ``tc.kind()`` is not
260:This function throws a :any:`LibsemigroupsError` if
261:``throw_if_image_value_out_of_range`` throws for any of the constructed

After those, we can merge

No worries, at all, I've fixed those too now, probably best to squash, when merging.