certpeek v0.1.0

First release of certpeek, a TLS certificate checker for the command line.

• Checks expiry, hostname match, trust chain (self-signed / untrusted issuer), not-yet-valid certs and legacy TLS versions
• Accepts hosts, host:port, IPv6 [::1]:port or full URLs; read a list from a file or stdin with -f
• Checks many targets concurrently (-c), sorted by days left
• -warn / -crit thresholds, table or -json output, exit codes 0/1/2 for cron and CI
• Single static binary, Go standard library only

Install: go install github.com/celaldrg/certpeek@latest or download a binary below.