v2.1.1

roaring 2.1.1

• Add the ability to serialize and deserialize a file directly with serializeFileAsync and deserializeFileAsync methods - those two are faster than loading a file in memory and deserialize/serialize in memory and are fully asynchronous. They use mmap if possible.
• Adds the ability to serialize to file text format and deserialize from buffer and from file text formats: newline_separated_values, comma_separated_values, tab_separated_values, json_array
• Adds the ability to serialize and deserialize a binary array of little endian uint32_t values
• Remove COW enabled by default, it could cause issues with asynchronous operations and multi threading - will provide a flag in a new version