set default packer buffer size to 256 to avoid multiple allocations
set default packer buffer size to 256 to avoid multiple allocations

GeertJohan/aerospike-client-go,aerospike/aerospike-client-go,GeertJohan/aerospike-client-go,atomx/aerospike-client-go,matematik7/aerospike-client-go,oldmantaiter/aerospike-client-go,oldmantaiter/aerospike-client-go,matematik7/aerospike-client-go,archsaber/aerospike-client-go,archsaber/aerospike-client-go,aerospike/aerospike-client-go,charl/aerospike-client-go,charl/aerospike-client-go,atomx/aerospike-client-go