cpplint: Mark some single-parameter constructors up for implicit conversion

For some of our single-parameter constructors, we _want_ to have implicit
conversions, because that makes the code more readable. Mark these up for
cpplint to ignore.

Signed-off-by: Gergely Nagy <algernon@keyboard.io>

src/kaleidoscope/MatrixAddr.h

@@ -57,8 +57,8 @@ class MatrixAddr {
   //       ridiculously bad assembler code for each copy construction,
   //       that would bloat the default firmware by 1K of PROGMEM!
   //
-  constexpr MatrixAddr(const ThisType &other) = default;
-  constexpr MatrixAddr(ThisType &&other) = default;
+  constexpr MatrixAddr(const ThisType &other) = default; // NOLINT(runtime/explicit)
+  constexpr MatrixAddr(ThisType &&other) = default; // NOLINT(runtime/explicit)
   //constexpr MatrixAddr(const ThisType &other) : offset_(other.offset_) {}
   //constexpr MatrixAddr(ThisType &&other) : offset_(other.offset_) {}
 

src/kaleidoscope/key_defs.h

@@ -36,7 +36,7 @@ class Key {
 
   Key() = default;
 
-  constexpr Key(uint16_t raw)
+  constexpr Key(uint16_t raw) // NOLINT(runtime/explicit)
     : Key{(uint8_t)(raw & 0x00FF), (uint8_t)(raw >> 8)}
   {}
 
@@ -140,7 +140,7 @@ class Key {
 
     DataProxy() = default;
 
-    constexpr DataProxy(uint8_t value) : value_{value} {}
+    constexpr DataProxy(uint8_t value) : value_{value} {} // NOLINT(runtime/explicit)
 
     DEPRECATED(DIRECT_KEY_MEMBER_ACCESS)
     DataProxy &operator=(uint8_t value) {