Minor edits; S23 schedule change

Swapped weeks 3 and 4 to better work with homework schedule, since
traits are a pre-req for a lot of interesting code.

Also added:
    - Course staff mailing list
    - Some minor policy edits
    - Graduate grading

syllabus.tex

@@ -335,6 +335,7 @@
 \begin{minipage}{.85\textwidth}
     \centering
     {\huge {\fullcoursecode: \longcoursename}}
+    {\small \textit{Updated \today}}
 
     \vspace{1em}
 
@@ -345,6 +346,13 @@
 
     \vspace{1em}
 
+    \begin{center}
+        For general questions or concerns any instructor can address, please use 
+        \href{mailto:rust-stuco-staff@lists.andrew.cmu.edu}{\texttt{rust-stuco-staff@lists.andrew.cmu.edu}}
+    \end{center}
+
+    \vspace{1em}
+
     \longsemester
 \end{minipage}
 \end{center}
@@ -439,9 +447,9 @@ \section*{Grading}
 
 \begin{center}
     \begin{tabular}{@{}ll@{}}
-        Grade   & Points    \\ \toprule
-        P       & 600--1000 \\
-        NP      & 0--600    \\ \bottomrule
+        Grade    & Points    \\ \toprule
+        P (or S) & 600--1000 \\
+        NP       & 0--600    \\ \bottomrule
     \end{tabular}
 \end{center}
 
@@ -483,11 +491,17 @@ \subsection*{Final}
 you've learned from the course. The project will showcase Rust's elegance for
 systems engineering and teach you valuable life lessons.
 
-\subsection*{Late-work}
+\subsection*{Late work}
 
 All homework released prior to the midterm will be due when the midterm is, and
 similarly for the final. Beyond this, no late work is accepted.
 
+If you experience extenuating circumstances (e.g., you are hospitalized, have a
+family emergency, a conflict with a university-sponsored event) that prohibit
+you from submitting your assignments on time, please let us know (in advance, if
+possible). We'll evaluate these instances on a case-by-case basis and arrange
+for reasonable accommodations.
+
 \section*{Academic Integrity}
 
 Discussion of homework problems, written or verbal, is always permitted. That
@@ -510,11 +524,11 @@ \section*{Course Schedule}
     2023-01-25  & Pattern matching, \code{impl} blocks; introduction to
                   ownership, lifetimes and the borrow system
                 & PPM Parsing                                               \\
-    2023-02-01  & Function types, closures; more advanced ownership semantics
-                & Sudoku Solver                                             \\
-    2023-02-08  & Polymorphism, bounded (traits) and unbounded; trait objects
+    2023-02-01  & Polymorphism, bounded (traits) and unbounded; trait objects
                   and dynamic dispatch
                 & Parsing Combinator Library                                \\
+    2023-02-08  & Function types, closures; more advanced ownership semantics
+                &                                                           \\
     2023-02-15  & Livecoding a library for text iteration: applying lifetimes,
                   polymorphism, traits.
                 & Midterm                                                   \\