optics-extra-0.4: Extra utilities and instances for optics-core

Index - <

<%Optics.Indexed, Optics.Extra
<%=Optics.State.Operators
<%>Optics.Indexed, Optics.Extra
<&>Optics.Extra
<.=Optics.State.Operators
<<%=Optics.State.Operators
<<.=Optics.State.Operators
<<?=Optics.State.Operators
<?=Optics.State.Operators
<|Optics.Cons, Optics.Extra