Input string '1.25' is not a valid integer

[FurnaceUpgrades] [Config] Detected legacy config format (float values). Attempting migration... Input string '1.25' is not a valid integer. Path '['Upgrades Settings'].furnace['Fuel speed'][0].Multiplier', line 97, position 28.


Why cant we not use 1.25 or 1.5 anymore ?  it has to be entire numbers now. 

o.reload FurnaceUpgrades
Unloaded plugin FurnaceUpgrades v2.6.0 by ifte
[FurnaceUpgrades] [Config] Detected legacy config format (float values). Attempting migration... Input string '6.0' is not a valid integer. Path '['Upgrades Settings'].furnace['Smelting speed'][0].Multiplier', line 75, position 27.
[FurnaceUpgrades] Migrating legacy config to new format...
[FurnaceUpgrades] [Migration] Could not migrate default values: Object must implement IConvertible.
[FurnaceUpgrades] [Migration] Failed to migrate Upgrades: Object must implement IConvertible.
[FurnaceUpgrades] Legacy config migrated successfully.
[FurnaceUpgrades] Ignore 'Object must implement IConvertible' warnings.
[FurnaceUpgrades] The CanStackItem, CanCombineDroppedItem hook's was unsubscribed due to conflicts with the 'StackModifier' plugin
[FurnaceUpgrades] If the StackModifier plugin oven stack is greater than (1), upgrades will be lost, FurnaceUpgrades does not work correctly when changing the Furnace Stack using StackModifier!
Loaded plugin FurnaceUpgrades v2.6.0 by ifte
[Image Library] Starting order FurnaceUpgrades
Image batch (FurnaceUpgrades) has been stored successfully


these are the values i usually have. 
        {
          "Cost": 250,
          "Multiplier": 1.25
        },
        {
          "Cost": 500,
          "Multiplier": 1.5
        },
        {
          "Cost": 1000,
          "Multiplier": 1.75
        },
        {
          "Cost": 2500,
          "Multiplier": 2.0
        },
        {
          "Cost": 3250,
          "Multiplier": 2.5
        }


Version 2.5.5 works perfect. 
Version 2.6 is the issue. 

hey with the recent changes, I used harmony, so in harmony you cant change furnace multipliers with float values they have to be whole number, You can still use the old version, I will make sure previous method is well up to date