Refactored bit reader

The bit reader had a weak interface where it relied on the caller to make sure the bit order was Little Endian, and to byte align the reader. The refactored bit reader will make sure the byte order is Little Endian and is able to byte align with the func Align().

Failing magical property

Magical property 109 was failing on chars with NV states or modded attributes. 109 is curse resistance, but it's not found in the vanilla game client.

Type-o fix.

Fixed a simple type-o that causes services that rely on the package to display the wrong item name for Darkforce spawn.

Parse Item interface

• Added item parsing func to public interface
• Fixed bug with two hand weapons returning damage as one hand damage
• Fixed bug where ID 0 would be omitted over http with omitempty attribute

Public item codes

• Added public item codes from #17.

Properties on items publicly available and added Plague runeword

• Made properties on items publicly available
• Added the Plague runeword
• Added go.mod

1.0.0

Added ladder bit, so the parser will now recognize if the character is a ladder character or not.