📝 document artifact sizes again

docs/reference/build-artifacts.md

@@ -5,6 +5,8 @@ affect artifact size.
 
 ## 2021-01Jan-03
 
+(I assume these were captured on x86_64)
+
 Git commit 88e7839841ad812f5645a30503955511ac107bdd
 
 Sizes:
@@ -27,3 +29,18 @@ Gzipped sizes:
 - ptth_kv: 1.6 MB
 - ptth_relay: 3.3 MB
 - ptth_server: 4.9 MB
+
+## 2021-07Jul-11
+
+Captured on x86_64
+
+Git commit 6f45f5105e248ed812e7db964a8dbe93ac3a9d2b
+
+On this one I switched to `rustls` and ditched `heim` so that I could get it
+to compile on my Android phone.
+
+- ptth_relay: 11 MB (3.4 MB gzipped)
+- ptth_server: 15 MB (4.9 MB gzipped)
+
+So not really a big difference. Which is surprising, because it now has the
+equivalent of (the useful parts of OpenSSL) linked in.