Expose the Bot's Inventory.
Expose the Bot's Inventory.

Fix for issue #90.
- Expose the bot's inventory to users of the Trade class.
- Perhaps the bot's  inventory should be tracked by the Bot class.

BuzzyOG/CSGOWinBig-SteamBot,tarun200897/SteamBot,TheRod1990/SteamBot,martingabriel/SteamBot,wqbill/SteamBot,23RDGit/CSGOWinBig-SteamBot,icodingforfood/SteamBot,tarun200897/SteamBot,xversial/SteamBot,StormReaper/SteamBot,Banana23/Tryout,MattrAus/SteamBot,stigping/SteamBot,Alex-Nabu/CSGOWinBig-SteamBot,ChalkyBrush/SteamBots,wowzone/gamerpro,Schwehn42/SteamBot,23RDGit/CSGOWinBig-SteamBot,wqbill/SteamBot,trervorx/SteamBot,StormReaper/SteamBot,zigagrcar/SteamTradeOffersBot,niachris/SteamBotNew,alanfort/CSGOWinBig-SteamBot,nuller1joe/SteamBot,Bottswana/SteamBot,avoak/SteamBot,stackia/SteamBot,ztizzlegaming/CSGOWinBig-SteamBot,darren1998s/SteambotTest,GoeGaming/SteamBot,MadBender/SteamBot,stigping/SteamBot,xversial/SteamBot,icodingforfood/SteamBot,novasdream/SteamBot,Murzyneczka/CSGOWinBig-SteamBot,Murzyneczka/CSGOWinBig-SteamBot,Wendt9222/SteamBot-1,BuzzyOG/CSGOWinBig-SteamBot,zigagrcar/SteamTradeOffersBot,TheRod1990/SteamBot,fjch1997/SteamBot,GoeGaming/SteamBot,novasdream/SteamBot,avoak/SteamBot,waylaidwanderer/SteamTradeOffersBot,stackia/SteamBot,GAMELASTER/SteamBot,nuller1joe/SteamBot,niachris/SteamBotNew,Bottswana/SteamBot,JackHarknes/Bot1,terryhau/SteamBot,JackHarknes/Bot1,MadBender/SteamBot,ChalkyBrush/SteamBots,Moondarker/CSGOWinBig-SteamBot,martingabriel/SteamBot,Schwehn42/SteamBot,terryhau/SteamBot,trervorx/SteamBot,MattrAus/SteamBot,BlueRaja/SteamBot,Alex-Nabu/CSGOWinBig-SteamBot,Banana23/Tryout,alanfort/CSGOWinBig-SteamBot,wowzone/gamerpro,GAMELASTER/SteamBot,Jessecar96/SteamBot,JackHarknes/Bot1,fjch1997/SteamBot,Wendt9222/SteamBot-1,ztizzlegaming/CSGOWinBig-SteamBot,Moondarker/CSGOWinBig-SteamBot