utcfromtimestamp was deprecated and nobody told me,

not even the deprecationwarning that got silently generated burning
20~30% of all CPU-time without actually displaying it anywhere, nice

python 3.12.0 is now only 5% slower than 3.11.6

also fixes some other, less-performance-fatal deprecations

tests/util.py

@@ -124,7 +124,7 @@ class Cfg(Namespace):
         ex = "df loris re_maxage rproxy rsp_jtr rsp_slp s_wr_slp theme themes turbo"
         ka.update(**{k: 0 for k in ex.split()})
 
-        ex = "ah_alg bname doctitle favico html_head lg_sbf log_fk md_sbf mth name textfiles unlist vname R RS SR"
+        ex = "ah_alg bname doctitle favico html_head lg_sbf log_fk md_sbf name textfiles unlist vname R RS SR"
         ka.update(**{k: "" for k in ex.split()})
 
         ex = "on403 on404 xad xar xau xban xbd xbr xbu xiu xm"
@@ -141,8 +141,11 @@ class Cfg(Namespace):
             fk_salt="a" * 16,
             unpost=600,
             u2sort="s",
+            u2ts="c",
+            sort="href",
             mtp=[],
-            mte="a",
+            mte={"a": True},
+            mth={},
             lang="eng",
             logout=573,
             **ka