1.01

Various bugfixes and improvements:

• long trades lists center-align with the original gui now instead of top; this helps shepherds especially with their long list of different coloured wool
• fixed display of items like pumpkins and melons that were shown too dark
• several additional null pointer checks to prevent crashes
• code cleanup
• removed most debugging output
• better check if two itemstacks can be merged, this prevents trade results being put into the wrong locations resulting in items in the hand after trading
• added link to mod URL