Host & Client force randomness on each other.

Updated Reserved entry order. Made DataType ID changes easier in future
(this MAY NOT  happen again once in use).

type-map/src/lib.rs

@@ -1,6 +1,8 @@
-// try_new returns Result<Self, ()> deliberately: the only failure mode is "id
-// is in the reserved range", which carries no extra information worth an error
-// type. The unit error is the intended API.
+/*
+ * try_new returns Result<Self, ()> deliberately: the only failure mode is "id
+ * is in the reserved range", which carries no extra information worth an error
+ * type. The unit error is the intended API.
+ */
 #![allow(clippy::result_unit_err)]
 
 pub const INTERNAL_COMM_RESERVED: std::ops::Range<u16> = 0..32;