v2.4.0-beta.2

The beta channel marches on for 2.4 with beta 2. In addition to the changes/additions/improvements from the previous beta, this release includes:

(Please see release notes for v2.4 stable for highlights.)

Changelog

a87f757 .gitignore: add IDE files (#4087)
28a4159 CONTRIBUTING: fix spelling (#4070)
aac1ccf caddy: Add InstanceID() method
ec3ac84 caddy: Support SetReadBuffer and SyscallConn for QUIC (fix #3998)
2a127ac caddyconfig: add global option for configuring loggers (#4028)
d63d5ae caddyhttp: improve grammar of comment for AllowH2C (#4072)
ec309c6 caddypki: Add SignWithRoot option for ACME server
f6bb02b caddytls: Remove old asset migration code (close #3894)
911c8a3 cmd: Use formatted logger for config adapter warnings (#4080)
87fbc07 cmd: main: fix minor doc typos (#4082)
a8fdc0a core: Initialize logging before admin
f35a7fa encode,staticfiles: Content negotiation, precompressed files (#4045)
0018b9b fileserver: Add a few more debug lines (#4063)
a48c620 fileserver: Browse listing supports dark mode (#4066)
5bf0a55 fileserver: Don't replace in request paths (fix #4027)
427bbe9 go.mod: Latest CertMagic (updated libdns conventions)
1c8ea00 go.mod: Migrate to golang.org/x/term (#4073)
a0a7c60 go.mod: Use latest CertMagic
f1c3668 headers: Fix Caddyfile parsing for request_header with matchers (#4085)
0d7fe36 httpcaddyfile: Add error directive for the existing handler (#4034)
bafb562 httpcaddyfile: Configure other apps from global options (#3990)
edb362a httpcaddyfile: Fix catch-all site block sorting
f137b82 logging: add replace filter for static value replacement (#4029)
802f80c map: Accept regex substitution in outputs (#3991)
6722ae3 reverseproxy: Add duration/latency placeholders (close #4012) (#4013)
ce5a093 reverseproxy: Fix round robin data race (#4038)
51f35ba reverseproxy: Fix upstreams with placeholders with no port (#4046)
75f797d reverseproxy: Implement health_uri, deprecate health_path, supports query (#4050)
bd357bf reverseproxy: Set cookie path to / when using cookie lb_policy (#4096)
ad8d01c rewrite: Implement regex path replacements
a6bc581 sigtrap_posix: add missing comma to SIGTERM info (#4078)