FromPrimitive i128/u128 typo

[teoxoy]

There is a typo in the conversion functions for i128/u128:

rust-decimal/src/decimal.rs

Lines 2995 to 2998 in d96f762

	#[cfg(has_i128)]
	impl_from!(i128, FromPrimitive::from_i28);
	#[cfg(has_i128)]
	impl_from!(u128, FromPrimitive::from_u28);

Should be:

• from_i28 -> from_i128
• from_u28 -> from_u128

For reference, here are the functions in question from num-traits crate

• from_i128
• from_u128

[paupino]

Good catch. Also demonstrates some missing build steps/tests - I'll try to get this addressed sometime this week.

[paupino]

The from_i128/from_u128 had quite a few issues however was almost never compiled in to the library due to a misconfiguration. Nonetheless, it should now be working correctly and has surrounding tests to ensure it continues to work.