BitReader.bit() now returns UInt8 instead of Int

Now it is consistent with return type of bits().

Author: tsolomko

Sources/BitReader.swift

@@ -16,7 +16,7 @@ public protocol BitReader: class {
     // TODO: Rename?
     func intFromBits(count: Int) -> Int
 
-    func bit() -> Int
+    func bit() -> UInt8
 
     // TODO: Describe, that it doesn't check for the end.
     func align()

Sources/LsbBitReader.swift

@@ -56,8 +56,8 @@ public final class LsbBitReader: ByteReader, BitReader {
         return result
     }
 
-    public func bit() -> Int {
-        let bit = self.data[self.offset] & self.bitMask > 0 ? 1 : 0
+    public func bit() -> UInt8 {
+        let bit: UInt8 = self.data[self.offset] & self.bitMask > 0 ? 1 : 0
 
         if self.bitMask == 128 {
             self.offset += 1

Sources/MsbBitReader.swift

@@ -56,8 +56,8 @@ public final class MsbBitReader: ByteReader, BitReader {
         return result
     }
 
-    public func bit() -> Int {
-        let bit = self.data[self.offset] & self.bitMask > 0 ? 1 : 0
+    public func bit() -> UInt8 {
+        let bit: UInt8 = self.data[self.offset] & self.bitMask > 0 ? 1 : 0
 
         if self.bitMask == 1 {
             self.offset += 1