13.16.0

• bn::sound::master_volume and bn::sound::set_master_volume added.
• Sound master volume actions added.
• bn::sprite_shape_size constructor from width and height added.
• Maximum number of sprites per scanline increased.
• bn::timer::elapsed_ticks accuracy improved.
• Display management optimized.
• bn::bitset equality operators fixed.
• BN_LOG_BACKEND_MGBA also works with NanoBoyAdvance.
• Getting started page improved.
• More questions added to Frequently asked questions (FAQ) page.