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fix commit f9eda3c5, add code to handle optimized derive of bimap for constructor arguments that do not contain a type variable

extend the number of cases in which a function is generated instead of using bimap when deriving generic functions, also permit some records

in module generics1, use bimap_from_simple_type and bimap_to_simple_type also for partial function calls

extend the number of cases in which a function is generated instead of using bimap when deriving generic functions, also permit constructor arguments that do not contain a type variable

removed optional type context in an import of an instance, it is not required and was ignored by the compiler

Add error and warning "unused existentially quantified type variable"

Closes #44

See merge request clean-compiler-and-rts/compiler!6

Prevent runtime error on illegal type arguments in generic function definitions

Closes #43

See merge request clean-compiler-and-rts/compiler!5

add optimizations that creates specialized zero arity functions for partial function applications with all arguments only zero arity functions or constructors or integer or string denotations, generic derive often generates these function applications

define equal_constructor, less_constructor and greater_constructor using macros containing a local function with inline code, because the boot compiler does not yet support :== code in definition modules

add number of class constraints of a member to the arity of the member (not counting its own class constraint) in module trans, to prevent marking functions generated from those member functions by fusing constraint(s) as instance members

Allow generic instances of unboxed arrays of non-basic types

See merge request clean-compiler-and-rts/compiler!3

backend

add inline abc code specified in system modules by adding :== code { .. } to types of functions or instances