Fold in a changes file and update exceptions.txt.

Co-authored-by: Florentin Rochet <florentin.rochet@uclouvain.be>

changes/ticket32088

+  o Major features (Proposal 310, performance + security):
+    - Implements Proposal 310 - Bandaid on guard selection.
+      Proposal 310 solves a load-balancing issue within Prop271 which strongly
+      impact experimental research with Shadow.
+      Security improvement: Proposal 310 prevents any newly Guard relay to
+      have a chance to get into the primary list of older Tor clients,
+      except if the N first sampled guards of these clients are unreachable.
+      Implements recommendation from 32088.
+      
+      Proposal 310 is linked to the CLAPS project researching optimal
+      client location-aware path selections. This project is a collaboration
+      between the UCLouvain Crypto Group, the U.S. Naval Research Laboratory and
+      Princeton University.

scripts/maint/practracker/exceptions.txt

@@ -182,10 +182,10 @@ problem function-size /src/feature/client/addressmap.c:addressmap_rewrite() 109
 problem function-size /src/feature/client/bridges.c:rewrite_node_address_for_bridge() 125
 problem function-size /src/feature/client/circpathbias.c:pathbias_measure_close_rate() 108
 problem function-size /src/feature/client/dnsserv.c:evdns_server_callback() 153
-problem file-size /src/feature/client/entrynodes.c 3827
+problem file-size /src/feature/client/entrynodes.c 4000
 problem function-size /src/feature/client/entrynodes.c:entry_guards_upgrade_waiting_circuits() 155
 problem function-size /src/feature/client/entrynodes.c:entry_guard_parse_from_state() 246
-problem file-size /src/feature/client/entrynodes.h 639
+problem file-size /src/feature/client/entrynodes.h 700
 problem function-size /src/feature/client/transports.c:handle_proxy_line() 108
 problem function-size /src/feature/client/transports.c:parse_method_line_helper() 110
 problem function-size /src/feature/client/transports.c:create_managed_proxy_environment() 111