v1.0.3 - Fixed `assert` methods

• assert.truthy() - checks if something is truthy
• assert.falsey() - checks if something is falsey
• assert.eq() - uses the == comparison (alias of assert.equals())
• assert.strictEquals() - uses the === comparison
• assert.deepEquals() - uses the react-fast-compare deep equals comparison
• assert.isType() - uses a typeof comparison
• assert.isImmutable() - checks if something is a Boolean, Number, String, Null
• assert.isMutable() - checks if something is an Object, Array, Function, Class, Map, or Set
• assert.isReactElement() - checks object contains $$typeof = REACT_ELEMENT_TYPE