Refactor align converter

[noborus]

Change reflect.DeepEqual to slices.Equal.
rightAlign is changed to not reset every time.
Change trimLeft and trimRight to trimmedIndices.
markNext and markPrev are renamed to nextMark and prevMark.

[ccoVeille]

Usually constants are sharing a common prefix, allowing to find the easily when using completion in the IDE, they are also ordered in the godoc if they are exported

Suggested change

	esConv string = "es" // esConv processes escape sequence(default).
	rawConv string = "raw" // rawConv is displayed without processing escape sequences as they are.
	alignConv string = "align" // alignConv is aligned in each column.
	)
	const (
	generalName string = "general"
	convEscaped string = "es" // convEscaped processes escape sequence(default).
	convRaw string = "raw" // convRaw is displayed without processing escape sequences as they are.
	convAlign string = "align" // convAlign is aligned in each column.
	)
	const (
	nameGeneral string = "general"

[noborus]

Thank you for your comment.
That's right. Change.

[ccoVeille]

Based of the fact the if starts here and ends with the function, you could do this

Suggested change

	if !slices.Equal(m.alignConv.maxWidths, maxWidths) {
	if slices.Equal(m.alignConv.maxWidths, maxWidths) {
	return
	}

[noborus]

Oops, that's right.

[ccoVeille]

I wouldn't rename them in the same logic as

#623 (comment)

But why not

[noborus]

This depends on the naming rules of the function name.

[ccoVeille]

as I said, why not 😁