* adding rules for swap files to .gitignore
* main, d2common: load Magic/Rare/Unique Affix
* d2common: item affixes only
removed Rare/Unique Prefix/Suffix as those are related to monsters, not items.
* removed debug print from item_affix.go
* changed item affix type names for clarity, removed debug print from data_dictionary
* d2common: item affix datadict and records
Item Affixes are defined in `/data/global/excel/Magic{Prefix,Suffix}.txt`
Rare and Unique Pre/Suffixes seem to be for monsters, not items.
d2common: item affixes only
removed Rare/Unique Prefix/Suffix as those are related to monsters, not items.
removed debug print from item_affix.go
changed item affix type names for clarity, removed debug print from data_dictionary
* reverting to pre-allocating memory for parsing txt lines
* removing the rest of the rare/unique definitions
* removing the rest of the rare/unique definitions
* adding ItemStatCost data dict loader
* adding data dict loader for difficulty levels
