docs(README): add missing flake8-simplify

[mkniewallner]

Noticed that flake8-simplify is mentioned here, but not in the list of tools that ruff can replace.

I based the total number of rules on what's listed in https://github.com/MartinThoma/flake8-simplify#rules (without the "legacyfix" and "removed" ones) and included the experimental rules (SIM9), but if you prefer not to include the experimental ones, it totals to 30 rules.

[charliermarsh]

I think I omitted it initially because we'd only done one rule so far, but this is also fine :)

[charliermarsh]

Somehow I got 33 rules when I created the table here -- is the discrepancy obvious to you? Is that table missing some, or the other way around?

[mkniewallner]

I think I omitted it initially because we'd only done one rule so far, but this is also fine :)

Ha, I was wondering if it was intentional or not, but since there are other plugins listed with only 1 rule (autoflake and flake8-tidy-imports, although they have way less total rules), I wasn't sure.

Somehow I got 33 rules when I created the table here -- is the discrepancy obvious to you? Is that table missing some, or the other way around?

Differences I can see:

• SIM104 is in the list, and I didn't count it as it is listed as a "legacyfix"
• SIM224 is in the list, but it's a placeholder for an experimental rule
• SIM124 is in the list, but it's a placeholder for an experimental rule

[mkniewallner]

The list also doesn't include experimental rules under SIM9 (although it's probably intended), so without the 3 extra rules, it totals to 30 (and 37 if we count the experimental ones).

[charliermarsh]

Ok cool -- let's go with your list, those explanations make sense! I'll merge and edit the issue.