v0.6.0 - 2020-09-08

A couple of small, but nevertheless breaking changes:

• rakaly_melt_write_data now returns a size_t to indicate how many bytes were written. If the given melted buffer is null or if the given length isn't long enough to write into, then a 0 instead of -1 is returned.
• rakaly_melt_write_data no longer writes a trailing null terminator into the buffer