p1: /v2/scrape, /v1/fetch, auth, CLI, contract tests

Single Fetcher.Fetch on the Guard that holds DenyPrefixes. skipTlsVerification
is ignored. No 502. keys add writes the secret only to --out. Release binary
has no -test-allow-prefix.

vendor/github.com/go-shiori/go-readability/internal/re2go/base.re

@@ -0,0 +1,18 @@
+package re2go
+
+/*!rules:re2c:base_template
+re2c:eof              = 0;
+re2c:yyfill:enable    = 0;
+re2c:posix-captures   = 0;
+re2c:case-insensitive = 0;
+
+re2c:define:YYCTYPE     = byte;
+re2c:define:YYPEEK      = "input[cursor]";
+re2c:define:YYSKIP      = "cursor++";
+re2c:define:YYBACKUP    = "marker = cursor";
+re2c:define:YYRESTORE   = "cursor = marker";
+re2c:define:YYLESSTHAN  = "limit <= cursor";
+re2c:define:YYSTAGP     = "@@{tag} = cursor";
+re2c:define:YYSTAGN     = "@@{tag} = -1";
+re2c:define:YYSHIFTSTAG = "@@{tag} += @@{shift}";
+*/