Deciding which of the city’s many engaging playgrounds to visit may become a bit harder, with massive upgrades at Thomas Memorial Park opening this weekend.The new Thomas Memorial Park playground grand opening is scheduled for June 15 at 10 a.m., doubling the square footage of the site’s features after months of preparation.“The contractor has worked really hard to meet our request to be ready for the dedication, so we appreciate all of the efforts that they made,” Community Services Director Amy Miller said.Development on the 12-acre park at 411 Madison St. broke ground earlier this year after the Parks Advisory ...