Update docs

Author: oschwald

CHANGELOG.md

@@ -2,11 +2,9 @@
 
 ## 1.2.0
 
-* The `mmdbtype.Unmarshaler` now caches nested structures (Maps, Slices, and
-  Uint128 values) in addition to top-level values. This improves performance
-  when loading databases with shared nested data structures. Simple scalar types
-  are intentionally not cached as they are cheap to decode and caching would
-  waste memory and CPU cycles.
+* The `mmdbtype.Unmarshaler` now caches nested structures, maps and slices,
+  in addition to top-level values. This improves performance when loading
+  databases with shared nested data structures.
 * The zero value of `mmdbtype.Unmarshaler` is now documented as safe to use
   for unmarshaling without caching enabled. Use `NewUnmarshaler()` when you
   want caching.

mmdbtype/types.go

@@ -964,7 +964,7 @@ func isCacheableKind(kind mmdbdata.Kind) bool {
 
 // decodeDataTypeValue decodes a value from the decoder and returns the appropriate DataType.
 // If cache is provided (non-nil), it will check for cached values at the current decoder offset
-// and store newly decoded complex types (Map, Slice, Uint128) in the cache. Simple scalar types
+// and store newly decoded container types (Map, Slice) in the cache. Simple scalar types
 // are not cached as they are cheap to decode and caching them would waste memory.
 func decodeDataTypeValue(decoder *mmdbdata.Decoder, cache map[uint]DataType) (DataType, error) {
 	kind, err := decoder.PeekKind()