Hepsiburada — Turkey’s giant online shopping platform considered the Amazon of its country — floats on the Nasdaq today, for a valuation likely to exceed $3.9 billion on current projections, especially with shares being marked up to $14 apiece (up from the previously predicted $12 pricing). But this isn’t the end of the journey for this breakout Turkish tech and e-commerce company, for long-time founder and chairwoman Hanzade Doğan Boyner — who started the business in 1998 no less and still has overall control of the company — considers this…