FIX: Pan with non-empty arrays.
Updating CHANGES.txt.
Adding tests init file.
FIX: remove white hemi-border from image plots.
Updating CHANGES.txt
Correcting unnecessary size increase.
Merge pull request #219 from enthought/fix/image-draw-area

Fix white gap between image and border
Fixing conflicts in CHANGES.txt.
Merge pull request #215 from enthought/fix/pan-with-empty-data

Fix pan with empty data
add a test for issue #220
fix issue #220
update change log
no need for scipy
Update cmap_image_plot.py
Fix sign inversion bug in Base1DMapper.
OCD: import order.
Split tests.
Tests which demonstrate issues with linearmapper
Merge branch 'revived-fix/set-screen-bounds' into fix/stretch-data-false

Conflicts:
	chaco/tests/linearmapper_test_case.py
Fix base1dmapper and reversed tests.