Docs: Link the 5.3.1 charset release.
Docs: Reflect merged charset support in wiki.
Docs: Clarify charset checks and request-local caching.
Wiki: Clarify charset cache semantics.
Wiki: Clarify constructor charset overrides.
Wiki: Document charset connection behavior.
Wiki: Refresh installation and operations guidance.
Updated 4. Replication Lag (markdown)
Updated 3. Network Topology (markdown)
Updated 2. Primary & Replica Databases (markdown)
Clarify in-memory read/write tracking
Normalize whitespace
Prefer primary/replica vs. master/slave
Formatting improvements
Copy description from readme
Copy "FAQ" from readme
Add "php" to code blocks
Shorten headings
Titlecase
Copy "Replication lag" from readme
Copy "Network topology" from readme
Copy "Primary & Replica" from readme
Number 1
Number 0
Copy "Configuration" section from readme
Copy "Installation" section from readme