v1.0.0

Features & Improvements:

• Built-in distillation and memory bank are supported.
• Add automatically hyper-parameters optimization is projects/FastTune.
• Add some extension tasks in projects/, including face recogntion, attributed recognition, image classification, overhaul distillation and image retrieval.
• Support mixed precision training (using cfg.SOLVER.FP16_ENABLED) powered by apex.
• Accelerate re-rank with faiss-gpu.
• Change lr scheduler by epoch, and warmup by iter.