CEDAR RAPIDS — While the New Bohemia District gets the buzz as an up-and-coming trendy neighborhood with one new development after the other, its sister district directly across the Cedar River, Czech Village, has numerous upcoming projects that could transform how people think about and use the small retail and cultural hub honoring the city’s Czech heritage.Ahead are a greenway where a neighborhood once stood, a rebuilt Riverside Roundhouse, trails at Mount Trashmore and a spruced-up river front.