General tidying, addressing issues found by static analysis tool.

src/Targets/Microchip/AVR/AVR8/Tiny/Tiny.hpp

@@ -7,9 +7,9 @@ namespace Bloom::Targets::Microchip::Avr::Avr8Bit
     class Tiny: public Avr8
     {
     public:
-        Tiny(const Avr8& avr8): Avr8(avr8) {};
+        explicit Tiny(const Avr8& avr8): Avr8(avr8) {};
 
-        virtual bool supportsPromotion() override {
+        bool supportsPromotion() override {
             return false;
         }
     };