add support to Rename, change background color, bugfixed

• support to Rename current image file, only for folders
  • requested by @Gitoffthelawn issue #7
• support to change background color, can be checkered pattern
  • requested by @anantoghosh issue #10
• bugfixed: if set max volume cache < 4, changing the volume resulted in an unauthorized termination
• bugfixed: If the volume is already read, even if you specify the file of the folder and open the volume, the read file was opened

Support for resizing Alpha Images by CPU, add Option Dialog, save memory

• Support for resizing Alpha Images by CPU(zimg)
• add Option Dialog(2 options)
  • slideshow wait
  • max of volume cache
• fix to suppress memory consumption in x86

4 bugfixed

• bugfixed: Opening the volume again after reading over 10 pages resulted in an unauthorized termination
• bugfixed: Keyboard input did not work if FolderWindow is displayed in the main window
• bugfixed: The image was not loaded even if switching the volume with the keyboard in FolderWindow
• bugfixed: After switching to another Volume with SpreadViewing, and go back to original Volume, it goes one page
• changed: for including some Qt common headers

Record/Show/Load read progress of volumes

• to show read progress in FolderWindow
• to load with read progress for volumes

add support to list-up image in subfolders, 2 bugfixed

• add support to list-up images in subfolders, ignored archives
• bugfixed: Garbled characters occurred in the display of file names containing multi-byte characters in the zip archive
• bugfixed: When resizing with CPU, some images with α were not displayed

improve zip loader, 1 bug fixed, don't use OpenGL until use Shaders

• improve zip loader, couldn't load multibyte inner filenames of files
• bugfixed: wrong view size for auto rounded by JPEG EXIF with CPU interplations
• don't use OpenGL until use Shaders

add CPU Bicubic interpolation

• using Qt5.7.1
• build tested on ubuntu linux
  • detailed: 0.7.1_pre
• build support about zimg by g++
• list drives on FolderWindow
• bugfixed: Illegally terminated when image reading failed

Add FolderWindow, CPU Interpolation

• FolderWindow provides a simple view for folders/archives on current folder
• support CPU Interpolation, very high quality but shortly slow
• bug fixed: when auto load a volume, pagebar was injured
• bug fixed: can't load inner path of zip which contains multibyte words
• refactoring: relocated the source tree

Support archives of Catalog, smaller Catalog grid, improve folder loading, refactoring

• now support archives of Catalog, including zip,rar,cbr,cbz
• smaller Catalog grid for not long titles(folder or archive name)
• if folder not have files and have subfolders, QuickViewer attempt open a subfolder
• refactoring(remove Japanese comments, remove Unnecessary source codes)
• change some menu texts
• add menu which run email application with attachment file

2 bugfixed

• application ends abnormally after catalog deletion
• if filename of image is too long, the width of the main window was forcibly changed