make api compatible

• SerializedName 274K
• Since 25K
• Until 12K
• Expose 134K
• No Getter/Setter
• excludeFieldsWithoutExposeAnnotation 16K
• serializeNulls 27K
• registerTypeAdapter 47K
• registerTypeAdapterFactory 10K
• registerTypeHierarchyAdapter 9K
• setPrettyPrinting 32K
• setDateFormat 27K
• setFieldNamingPolicy 13K
• setFieldNamingStrategy 4K
• serializeSpecialFloatingPointValues 12K
• setVersion 14K
• enableComplexMapKeySerialization 5K
• setLongSerializationPolicy 3K
• setExclusionStrategies 7K
• addSerializationExclusionStrategy 5K
• addDeserializationExclusionStrategy 5K
• disableHtmlEscaping 11K