H5 updates

I resumed my online HTML5-based ePub reader project.

For those, who are unfamiliar with it: H5's main goal is to make reading electronic books transparent across various platforms and devices. Basically, it is an ePub reader, that can run in any browser, that supports HTML5 and modern JS (and is not buggy, like Edge). It does not require any form of signing in. You can just load your book, and start reading. But to get the most of it, you can connect a Google Drive account. It will allow H5 to sync your library and current book position between multiple devices.

Currently, it supports Chrome, Firefox and Safari, both desktop and mobile. Edge and IE11 are limited to local library only (no sync), due to a Microsoft bug. Android, iOS, and some Windows editions also support adding H5 to the start screen as an ordinary application (that removes browser address bar from the interface, and frees some space).

Here's what's new in today's H5 release:
  • added pending position save indicator (little star next to the sync button)
  • fixed a bug, that would ignore current position in the chapter when opening cloud book for the first time
  • added feature usage tracking
  • sync button now turns red if there's any kind of problem contacting cloud
Known issues:
  • sync button stays red even when connectivity to the cloud is restored
  • there's still no way to force load position from the cloud

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