fixed-layout page refresh flashing now reduced to minimum (necessary Chrome workaround for rendering glitch, probably due to CSS transform 3D acceleration (backface-visility?))
fixed Chrome hairline between two-page spread in fixed layout mode (rounding error)
minor
Merge branch 'develop' of https://github.com/readium/readium-shared-js into develop
fixed edge-case whereby TOC links point to display:none element, resulting in crash in compute-by-rectangle visibility (empty clientRects)
Merge branch 'develop' into txtr_dev