Switched fluid icons from event to fluid block's getIcon
Added set on fire effect when an entity touches the Pig Iron fluid
Added a custom class for smeltery inputs for better external readability
Have the IToolPart implementations actually respect the IToolPart API. (-1 on invalid material)
Merge pull request #844 from bonii-xx/pr2

Have the IToolPart implementations actually respect the IToolPart API.
Merge pull request #842 from bonii-xx/pr

Fix gravel ore being harvestable without shovel.
Merge pull request #841 from Tonius/patch-7

Added a custom class for smeltery inputs for better external readability
Use the input item object hashcode for determining SmelteryInput's hashcode, instead of the live item id
Update ru_RU.lang
Added preregistered fluids detection and handling
Adjustment for pigiron block effect
Merge pull request #848 from Tonius/patch-7

Use the input item object hashcode for determining SmelteryInput's hashcode
Merge pull request #849 from Mexahoid/patch-4

Update ru_RU.lang
Merge pull request #851 from Glassmaker/patch-fluids

Adds Preregistered fluids detection, and pigiron effect
Add correct isEffective implementation to DualHarvestTool.