Version bump

**New**

* Add flag to StosBrute to allow execution on cluster
* AssembleTiles method allows specifying a subregion to assemble
* ShowGrayscale function displays multiple images on a grid, better using screen real estate

**Changed**

* Bounds functions now follow the (MinY MinX MaxY MaxX) convention consistent with numpy image array indexing
Added version history
Fixed typo in exception info string
Switched to image_registration GetImageSize
Added properties for Rectangle corners.
Updated contains test to always use rectangles
1.1.3
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**New**

* Add flag to StosBrute to allow execution on cluster
* AssembleTiles method allows specifying a subregion to assemble
* ShowGrayscale function displays multiple images on a 2D grid for a more optimal use of screen real estate
* Added Spatial package which includes enums for standard indexing of nornir spatial arrays.  For example iArea.width is the index to use to obtain the width from a size tuple

**Changed**

* Bounds functions now follow the (MinY MinX MaxY MaxX) convention consistent with numpy image array indexing
* Alignment record now uses the standard (Y,X) indexing of the other image_registration packages.
* Removed many uses of ImageMagick identify to obtain image size and replaced with Pillow calls

**Fixed**

* Image padding was making images larger than they had to be.  This fix should increase registration speed
Additional tests for converting transforms to strings and back
Fix for X,Y indexing change in stos files
Version bump to 1.1.5
Merge branch 'Assemble'
Merge branch 'master'