Adds check if type is floating point type

Adds floats to implicit type conversion

Added error checking for operands that can't accept floats

Formatting

SemErr::new accepts Into<String>

Formatting

Adds floats to implicit type conversion

Added switch specific constants, no floating point nums

Added floats and doubles to semantic analyse stage

Added LongDouble type, fixed errors where suffixes weren't trimmed completely, fixed float word boundaries

Added floats and doubles to lexer and parse literals

Added option to link libraries

Fully implemented unsigned int/longs

Added ZeroExtend to tacky casts

Added unsigned int/longs