v0.5.0

Highlights

• email: SMTPS / implicit TLS on port 465. smtp.SendMail only speaks plain + STARTTLS, so Resend/SendGrid/etc. on :465 hang on the handshake. Detect port 465 and dial TLS directly. Added Email.TLSConfig (custom root pool / ServerName; always cloned per send) and Email.DialTimeout (scoped to the TCP/TLS connect phase).
• email: no silent cleartext downgrade. Drive Hello() explicitly so a failed EHLO can't be swallowed and mis-read as "STARTTLS not advertised".
• log: silence 14 go vet printf warnings. Split the internal log() method; public signatures unchanged. TestCallerFile guards the runtime.Caller skip.
• random: fix sync.Pool copy in New(). Construct the pool directly on the struct — sync.Pool must not be copied after first use.

Toolchain (breaking)

• Go directive bumped 1.18 → 1.23.0 to align with labstack/echo. Consumers on Go <1.23 should stay on v0.4.2.
• CI matrix: 1.23 / 1.24 / 1.25 / 1.26 × ubuntu / macos / windows.
• Deps refreshed: testify 1.8.4 → 1.11.1, go-colorable 0.1.13 → 0.1.14, go-isatty 0.0.20 → 0.0.21, x/sys 0.15.0 → 0.29.0 (highest that still supports Go 1.23).

Non-breaking code changes

• bytes/bytes_test.go: replaced Parse(\"8EiB\") assertions with Parse(\"7EiB\") — 2^63 overflowed int64 and relied on implementation-defined float-to-int behavior.

Full diff

#62