Model Redesign: Added Reference Frames

Added Inverse Functions
UI Redesign
Cleaned Code

MathPad/MPExpressionView.h

@@ -24,9 +24,6 @@
 
 @property (readonly, nonatomic, strong) MPExpressionStorage *expressionStorage;
 
-// @property (nonatomic, getter = isEditable) BOOL editable;
-@property (nonatomic) BOOL allowsIntelligentReplacements;
-
 @property (nonatomic, strong) MPRangePath *selection;
 @property (nonatomic, strong) MPParseError *error;
 
@@ -34,6 +31,7 @@
 @property (nonatomic) SEL action;
 
 #pragma mark Actions
+- (IBAction)switchRadiansDegrees:(id)sender;
 - (IBAction)showFunctions:(id)sender;
 
 @end