Remove signatures from composite_channel test  #68
Remove signatures from composite_with_xy test  #68
Separated composite_with_xy test seem needless #68
Remove signatures from reset_coords test  #68
Remove signatures from channel_images test  #68
Test only essential channel_images to pass  #68
Remove signatures from liquid_rescale test  #68
Remove signatures from draw_text test  #68
Left position of text can vary  #68
Top offset of text also can vary  #68
Remove signatures from entire test.  Close #68
Merge branch 'issue-68'