Places API : (bg thread: 82): Unknown type for enum com.google.maps.model.AddressComponentType: 'landmark' com.google.maps.internal.SafeEnumAdapter.read:64

#### Environment details

1. Specify the API : Places API
2. OS type and version : linux centos7
3. Library version and other environment information: 2.1.0

#### Steps to reproduce

1. This warning is thrown when the places api returns a place type 'landmark'

#### Stack trace
```
(bg thread: 82): Unknown type for enum com.google.maps.model.AddressComponentType: 'landmark'
com.google.maps.internal.SafeEnumAdapter.read:64
com.google.maps.internal.SafeEnumAdapter.read:34
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read:41
com.google.gson.internal.bind.ArrayTypeAdapter.read:72
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read:41
com.google.gson.internal.bind.ArrayTypeAdapter.read:72
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.Gson.fromJson:1058
com.google.gson.Gson.fromJson:1016
com.google.gson.Gson.fromJson:959
com.google.gson.Gson.fromJson:927
com.google.maps.internal.OkHttpPendingResult.parseResponseInternal:297
com.google.maps.internal.OkHttpPendingResult.parseResponse:230
com.google.maps.internal.OkHttpPendingResult.onResponse:219
okhttp3.internal.connection.RealCall$AsyncCall.run:519
java.util.concurrent.ThreadPoolExecutor.runWorker:1136
java.util.concurrent.ThreadPoolExecutor$Worker.run:635
java.lang.Thread.run:833
com.google.maps.internal.SafeEnumAdapter.read:64
com.google.maps.internal.SafeEnumAdapter.read:34
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read:41
com.google.gson.internal.bind.ArrayTypeAdapter.read:72
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read:41
com.google.gson.internal.bind.ArrayTypeAdapter.read:72
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read:161
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read:266
com.google.gson.Gson.fromJson:1058
com.google.gson.Gson.fromJson:1016
com.google.gson.Gson.fromJson:959
com.google.gson.Gson.fromJson:927
com.google.maps.internal.OkHttpPendingResult.parseResponseInternal:297
com.google.maps.internal.OkHttpPendingResult.parseResponse:230
com.google.maps.internal.OkHttpPendingResult.onResponse:219
okhttp3.internal.connection.RealCall$AsyncCall.run:519
java.util.concurrent.ThreadPoolExecutor.runWorker:1136
java.util.concurrent.ThreadPoolExecutor$Worker.run:635
java.lang.Thread.run:833
```