/**

@fn unsigned int vrna_strtrim(char *string, const char *delimiters, unsigned int keep, unsigned int options)
@scripting
@parblock
Since many scripting languages treat strings as immutable objects, this function does not
modify the input string directly. Instead, it returns the modified string as second return
value, together with the number of removed delimiters.

The scripting language interface provides an overloaded version of this function, with
default parameters @p delimiters=NULL, @p keep=0, and @p options=#VRNA_TRIM_DEFAULT.
@endparblock

@fn void vrna_init_rand_seed(unsigned int seed)
@scripting
This function is available as an overloaded function @b init_rand() where the
argument @p seed is optional.

*/