No support for native map syntax in files

[vfaronov]

Given the following toy.json:

{
  "options": {
    "foo": 0.4,
    "bar": 0.25
  }
}

and the following program:

package main

import (
	"fmt"

	"github.com/cristalhq/aconfig"
)

func main() {
	var cfg struct {
		Options map[string]float64
	}
	loader := aconfig.LoaderFor(&cfg, aconfig.Config{
		Files: []string{"toy.json"},
	})
	err := loader.Load()
	fmt.Printf("%v\n%+v\n", err, cfg)
}

I expect the program to print:

<nil>
{Options:map[bar:0.25 foo:0.4]}

But instead, it prints:

aconfig: cannot load config: loading files: incorrect map value "0.25 foo:0.4]": strconv.ParseFloat: parsing "0.25 foo:0.4]": invalid syntax
{Options:map[]}

The desired output is achieved if I replace toy.json with:

{
  "options": "foo:0.4,bar:0.25"
}

It would be much more convenient to be able to specify maps with the config language’s native map syntax.