Spelling changes

• chapter-2-2: Muhammad -> Mehmed in "Muhammad had made the breach..." This originally said "Mahomet." It seems to me that this is referring to Mehmed II's conquest of Constantinople. Spelling his name as "Muhammad" isn't wrong, exactly (it is the Arabic form of his name) but it seems confusing because 1) that's not how his name is usually spelled and 2) "Muhammad" without any regnal numbers or epithets makes me think of the Islamic prophet, which is incorrect in this context.
• Ispahan -> Isfahan
• Cashmere -> Kashmir
• chapter-3-4: "sand-bank" was modernized to "sandbank" in verse. I would revert this because "sand-bank" has a different stress pattern than "sandbank."
• 7e76e15: I'm not sure I agree with the decision to normalize "Ex-Queen" as "ex-queen." Since "Ex-Queen" seems to be referring to a particular person, I think the original capitalization is fine.
• baea7b3: Is "Elect" here referring to a particular group of people? I can see the "Ex-Queen" one going either way but I think this one should be reverted because it seems to be the name of a movement.

Other stuff

• chapter-3-3: You used the timestamp 2097-30-12 where it should have been 2097-12-30.
• 7806e2d: In this editorial commit, you combined spelling changes with semantication (the span you added around "Laplace"). Unfortunately we've established that this is a no-no in terms of commit hygiene and you should rebase the span addition out of this commit and add it in separately.
• d9e16f9: In this commit, you added in quotation marks around thoughts. I suppose this is fine as is, but if we are changing the formatting, we might as well follow 8.2.7 and use <q> for the thoughts.
• The part-* files/sections should be renamed volume-* and use the volume epub semantic.
• In the CSS, I think the #chapter-3-10 blockquote:last-of-type p rule can be consolidated with the #chapter-3-10 blockquote:last-of-type rule for simplicity's sake.
• "Over the years, she had lost her husband, Percy Bysshe Shelley, in a boating accident; her close friend, Lord Byron; and her children." -- I think the wording of this sentence in the long description is confusing. "In a boating accident" coming in the middle of what is otherwise a list of people makes the sentence hard to follow.