Having doubly underscored her critical clout and sonic vision with the release of her fourth album, Have You In My Wilderness, late last year, L.A. experimental pop dilettante Julia Holter’s sold-out Button Factory in Dublin tonight is nothing if not perfect testament to following one’s very own path in the well-trodden wilderness of solo artistry. Having positively beguiled the Unitarian Church three years previous, the multi-instrumentalist returns to the capital a musician that has covered considerable creative ground since. An under-the-radar proposition for many tonight, New York indie-folk singer-songwriter DM Stith (below) wastes no time in making an impression as Holter’s sole support. Stripped back to acoustic…