0.7.0

This version is a substantial revision of easy-cast, introducing generics over rounding modes via the new Rounding trait.

Simple usage via the Conv, Cast, ConvApprox and CastApprox traits is largely unchanged. Usage with other rounding modes should be moved to the new ConvTo and CastTo traits (e.g. i32::conv_to(Nearest, 5.3), x.cast_to(Floor)).

External implementations of conversions should be moved to the ConvExact and ConvTo traits.

Added:

• Rounding trait with Exact, Approx rounding modes (#58)
• Trunc, Nearest, Floor, Ceil rounding modes (#61)
• ConvExact trait as an implementation helper for conversions which are never inexact (#58, #65)
• ConvTo trait for implementation and usage of conversions with a specific rounding mode (#58, #60, #63, #65)
• CastTo trait for casting with a specific rounding mode (#58, #60, #63)
• RangeError as a new error type (#56)

Changed:

• Added an associated Error type to the Conv and Cast traits (#62)
• Rename impl_via_trivial! to impl_via_identity! (#68)
• Implement Exact f64 → f32 conversion (#59)
• Implement Approx and Nearest int-to-float conversions (#59, #63)
• u128::MAX and other too-large values no longer coerce to f32::INFINITY under Exact rounding, as used by Conv and Cast (#67)
• Truncating-conversions (Trunc) no longer require the std or libm feature (#66)
• Implement core::error::Error on no-std (#57)
• Enabled the doc_cfg feature (#66)

Removed:

• Result type-def (#56)
• ConvFloat, CastFloat traits; this functionality remains available through the new rounding modes (#61)

Full Changelog: 0.6.1...0.7.0