v0.6.0

This release adds multi-word register type support: uint32, int32, uint64 and int64. It also adds a word_order top-level configuration setting, defaulting to highlow, that defines the order in which a value is distributed across a range of registers. (Thanks @icypete !). It also updates the config for the Sungrow SH5k-20 inverter to use the new uint32 register type.