Rubocop updates (#1118)

* Minimal code style enforcement

* Formatting and lint code updates (no change in functionality)

lib/money/arithmetic.rb

@@ -1,62 +1,62 @@
 module Money::Arithmetic
-    CoercedNumeric = Struct.new(:value)
+  CoercedNumeric = Struct.new(:value)
 
-    def +(other)
-        if other.is_a?(Money)
-            self.class.new(amount + other.amount, currency)
-        else
-            value = other.is_a?(CoercedNumeric) ? other.value : other
-            self.class.new(amount + value, currency)
-        end
+  def +(other)
+    if other.is_a?(Money)
+      self.class.new(amount + other.amount, currency)
+    else
+      value = other.is_a?(CoercedNumeric) ? other.value : other
+      self.class.new(amount + value, currency)
     end
+  end
 
-    def -(other)
-        if other.is_a?(Money)
-            self.class.new(amount - other.amount, currency)
-        else
-            value = other.is_a?(CoercedNumeric) ? other.value : other
-            self.class.new(amount - value, currency)
-        end
+  def -(other)
+    if other.is_a?(Money)
+      self.class.new(amount - other.amount, currency)
+    else
+      value = other.is_a?(CoercedNumeric) ? other.value : other
+      self.class.new(amount - value, currency)
     end
+  end
 
-    def -@
-        self.class.new(-amount, currency)
-    end
+  def -@
+    self.class.new(-amount, currency)
+  end
 
-    def *(other)
-        raise TypeError, "Can't multiply Money by Money, use Numeric instead" if other.is_a?(self.class)
-        value = other.is_a?(CoercedNumeric) ? other.value : other
-        self.class.new(amount * value, currency)
-    end
+  def *(other)
+    raise TypeError, "Can't multiply Money by Money, use Numeric instead" if other.is_a?(self.class)
+    value = other.is_a?(CoercedNumeric) ? other.value : other
+    self.class.new(amount * value, currency)
+  end
 
-    def /(other)
-        if other.is_a?(self.class)
-            amount / other.amount
-        else
-            raise TypeError, "can't divide Numeric by Money" if other.is_a?(CoercedNumeric)
-            self.class.new(amount / other, currency)
-        end
+  def /(other)
+    if other.is_a?(self.class)
+      amount / other.amount
+    else
+      raise TypeError, "can't divide Numeric by Money" if other.is_a?(CoercedNumeric)
+      self.class.new(amount / other, currency)
     end
+  end
 
-    def abs
-        self.class.new(amount.abs, currency)
-    end
+  def abs
+    self.class.new(amount.abs, currency)
+  end
 
-    def zero?
-        amount.zero?
-    end
+  def zero?
+    amount.zero?
+  end
 
-    def negative?
-        amount.negative?
-    end
+  def negative?
+    amount.negative?
+  end
 
-    def positive?
-        amount.positive?
-    end
+  def positive?
+    amount.positive?
+  end
 
-    # Override Ruby's coerce method so the order of operands doesn't matter
-    # Wrap in Coerced so we can distinguish between Money and other types
-    def coerce(other)
-        [ self, CoercedNumeric.new(other) ]
-    end
+  # Override Ruby's coerce method so the order of operands doesn't matter
+  # Wrap in Coerced so we can distinguish between Money and other types
+  def coerce(other)
+    [ self, CoercedNumeric.new(other) ]
+  end
 end