SparkyMK2 v0.6.0

Added

• Settings shows the app's version, so a bug report can say which one it is about. (#2)
• Clear project, in Settings: remove any of samples, patterns, screen images, and settings
  with the name from the current project, and keep the rest. Settings can only go with
  samples and patterns (the device's Init "All" takes all three, and the screen images
  too, so those are put back unless they were ticked). Typing the project's number
  confirms it. (#3)
• The app follows the unit: hit a pad there and the grid moves to its bank and selects it,
  and the pad lights while it sounds. It works the other way too: select a pad in the app
  and the unit selects it, and choosing a bank selects its first pad on both, as the unit
  does, so the grid and the pad editor always show the same bank. (#5)

Changed

• A new app icon, the Faceplate: a sampler's top panel with four knobs, a round display
  and effect buttons, drawn for SparkyMK2 by diamond-one, with its own drawings for the
  smallest sizes. (#1)
• Preview on the Samples tab plays the pad from its start to its end rather than for at
  most four seconds, turns into a Stop button while it plays, and runs a playhead across
  the waveform. (#5)
• Big folders open at once: the names show first and the file sizes follow in the
  background. An 832-file folder used to look like it never finished listing, because each
  size is asked for separately and every ask searches the whole folder. (#5)
• Deleting a folder on the SD card in the Files tab takes everything inside it along,
  instead of refusing unless it is empty, with a progress bar while it goes. Folders in the
  device's own storage, which holds the projects, still have to be emptied first. (#7)

Fixed

• Project names stick. The SP-404MKII renames whichever project is current, whatever
  project the rename names, and a name typed in Settings was saved as the project menu
  closed, so picking the next project quickly could hand it the name meant for the last
  one. Switching projects now waits for that save. Renaming a project that is not current
  (as sp404 rename-project allowed), an empty slot, or one saved by older firmware is
  refused with the reason: the device keeps a name only in a project's PADCONF.BIN, and
  those have none, so the name was shown and then lost. (#2)
• The Files tab and the Import browser read their folder again whenever saving finishes,
  whether it worked or not, and whenever the Files tab is opened or the top bar's reload
  button is pressed. Files deleted, imported or exported no longer linger in the list until
  it is refreshed by hand, and a delete that fails halfway shows what it left. (#6)
• Unplugging the device while connected goes back to the connect screen with one message,
  instead of a Broken pipe toast for each action and a restart to recover, and the app
  connects again by itself once the device is plugged back in. (#5)
• Files dropped on a pad from Finder on a Retina screen land on that pad; the drop
  position was halved, sending pad 11 to pad 2. (#5)
• The Mac's own files on a card (._* twins, .DS_Store, .Spotlight-V100, .Trashes,
  .fseventsd) no longer show in the Files tab or the Import browser, and are left out of
  folders saved to the computer. (#5)
• On macOS the device is listed once, on its cu.* port, rather than twice. (#5)