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Edit Book: Fix position syncing and Live CSS not working if the opening tag is split over multiple lines
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Driver for Kiano Booky Light. Fixes #1353893 [calibre doesn't see the device, Kiano Booky Light](https://bugs.launchpad.net/calibre/+bug/1353893)
E-book viewer: Allow reloading the current book by pressing F5 or Ctrl+R. Fixes #1354059 [[feature-request] reload ePub file in ebook-viewer](https://bugs.launchpad.net/calibre/+bug/1354059)
version 1.48.0
Enhancement #1353954 - Select all buttons. Note that the button layout changed considerably.
Library check: Add buttons to conveniently mark all fixable/deletable items. Fixes #1353954 [Enhancement - In 'Check library' allow select all for extra titles, extra authors, etc](https://bugs.launchpad.net/calibre/+bug/1353954)

Merge branch 'master' of https://github.com/cbhaley/calibre
Port compiling of .ui forms
Port imports
Port build script for building PyQt extensions to PyQt5
Port the progress indicator extension to PyQt5
Allow controlling PyQt5 import path via the env var PYQT5_IMPORT_PATH
faster builds
Get rid of the PyQt4 string from everywhere
Port: setMargin() reset() QStringList()

setMargin(): QLayout no longer has a setMargin() function, replace with
setContentsMargins()

reset(): QAbstractListModel no longer has reset(), replace with
beginResetModel(), endResetModel()

QStringList: No longer exists, a simply python list of strings works
instead
Fix mouse wheel not working in diff view
Port coffeescript compiler
Add note about headless Qt QPA plugin
Port WebKit imports and QChar

WebKit has been split up into QtWebKit and QtWebKitWidgets. Change
imports accordingly.

Replace use of QChar since it no longer exists in PyQt5