Updated keywords.txt

This commit fixes some highlighting issues due to multiple keyword
entries.

The missing C++ keywords have been added.

A set of standard fixed sized integers has been added also: uint8_t,
int32_t,...

build/shared/lib/keywords.txt

@@ -28,22 +28,35 @@ INTERNAL	LITERAL2	AnalogReference	RESERVED_WORD_2
 INTERNAL1V1	LITERAL2	AnalogReference	RESERVED_WORD_2
 INTERNAL2V56	LITERAL2	AnalogReference	RESERVED_WORD_2
 
-auto	LITERAL2		
+auto	LITERAL2		RESERVED_WORD_2
 constexpr	LITERAL2		RESERVED_WORD_2
 decltype	LITERAL2		RESERVED_WORD_2
 nullptr	LITERAL2		RESERVED_WORD_2
+wchar_t	LITERAL2		RESERVED_WORD_2
+
+int8_t	LITERAL2		RESERVED_WORD_2
+int16_t	LITERAL2		RESERVED_WORD_2
+int32_t	LITERAL2		RESERVED_WORD_2
+int64_t	LITERAL2		RESERVED_WORD_2
+uint8_t	LITERAL2		RESERVED_WORD_2
+uint16_t	LITERAL2		RESERVED_WORD_2
+uint32_t	LITERAL2		RESERVED_WORD_2
+uint64_t	LITERAL2		RESERVED_WORD_2
+
 char16_t	LITERAL2		RESERVED_WORD_2
 char32_t	LITERAL2		RESERVED_WORD_2
 static_assert	LITERAL2		RESERVED_WORD_2
 operator	LITERAL2		RESERVED_WORD_2
 enum	LITERAL2		RESERVED_WORD_2
 delete	LITERAL2		RESERVED_WORD_2
+bool	LITERAL2		RESERVED_WORD_2
 boolean	LITERAL2	BooleanVariables	RESERVED_WORD_2
 byte	LITERAL2	Byte	RESERVED_WORD_2
 char	LITERAL2	Char	RESERVED_WORD_2
 const	LITERAL2	Const	RESERVED_WORD_2
 false	LITERAL2	Constants	LITERAL_BOOLEAN
 float	LITERAL2	Float	RESERVED_WORD_2
+double	LITERAL2		RESERVED_WORD_2
 null	LITERAL2		RESERVED_WORD_2
 int	LITERAL2	Int	RESERVED_WORD_2
 long	LITERAL2	Long	RESERVED_WORD_2
@@ -58,14 +71,7 @@ String	LITERAL2	String	RESERVED_WORD_2
 void	LITERAL2	Void	RESERVED_WORD_2
 true	LITERAL2		LITERAL_BOOLEAN
 unsigned	LITERAL2		RESERVED_WORD_2
-
-boolean	LITERAL2	boolean_	RESERVED_WORD_2
-byte	LITERAL2	byte_	RESERVED_WORD_2
-char	LITERAL2	char_	RESERVED_WORD_2
-float	LITERAL2	float_	RESERVED_WORD_2
-int	LITERAL2	int_	RESERVED_WORD_2
-long	LITERAL2	long_	RESERVED_WORD_2
-word	LITERAL2	word_	RESERVED_WORD_2
+word	LITERAL2		RESERVED_WORD_2
 
 # KEYWORD2 specifies methods and functions
 
@@ -184,7 +190,6 @@ class	KEYWORD3		RESERVED_WORD
 continue	KEYWORD3	Continue	RESERVED_WORD
 default	KEYWORD3	SwitchCase	RESERVED_WORD
 do	KEYWORD3	DoWhile	RESERVED_WORD
-double	KEYWORD3	Double	RESERVED_WORD
 else	KEYWORD3	Else	RESERVED_WORD
 for	KEYWORD3	For	RESERVED_WORD
 if	KEYWORD3	If	RESERVED_WORD
@@ -196,11 +201,18 @@ this	KEYWORD3		RESERVED_WORD
 throw	KEYWORD3		RESERVED_WORD
 try	KEYWORD3		RESERVED_WORD
 while	KEYWORD3	While	RESERVED_WORD
-word	KEYWORD3	Word	RESERVED_WORD
 
 setup	KEYWORD3	Setup	RESERVED_WORD
 loop	KEYWORD3	Loop	RESERVED_WORD
 
+alignas	KEYWORD3		RESERVED_WORD
+alignof	KEYWORD3		RESERVED_WORD
+asm	KEYWORD3		RESERVED_WORD
+export	KEYWORD3		RESERVED_WORD
+thread_local	KEYWORD3		RESERVED_WORD
+noexcept	KEYWORD3		RESERVED_WORD
+export	KEYWORD3		RESERVED_WORD
+
 # operators aren't highlighted, but may have documentation
 
 +=		IncrementCompound