Reflect actual slice type in TreeFromMap

[pelletier]

Retrieve the actual type of a slice's elements when possible.

Fixes #143

[carolynvs]

I just tested this with my dep tests and now I am getting a new error. Here's an updated test to reproduce:

func TestRoundTripArrayOfTables(t *testing.T) {
	orig := "\n[[stuff]]\n  name = \"foo\"\n  things = [\"a\",\"b\"]"
	tree, err := Load(orig)
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}

	m := tree.ToMap()

	tree, err = TreeFromMap(m)
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}

	want := orig
	got, err := tree.ToTomlString()
	if err != nil {
		t.Fatalf("unexpected error: %s", err)
	}

	if got != want {
		t.Errorf("want:\n%q\ngot:\n%q", want, got)
	}
}

Output

unexpected error: unsupported value type []string: [a b]

[pelletier]

@carolynvs Good catch! Added a fix for that bug as well.

[carolynvs]

Thank you! All fixed. 💖