Need ability to specify size for image

I am sorry if this is wrong place to make a feature request.

I need an ability to control the size of the image. I think this can be a useful feature to add to main distribution
Here my proposed changes:
============================================
file: renderer.py
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< anchor='as-char', wrapInPara=True,
< size=None):
---
> anchor='as-char', wrapInPara=True):
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< p_wrapInPara are only relevant for images.
< size can be a tuple (width, height) that specify size of an image
< in centimeters'''
---
> p_wrapInPara are only relevant for images.'''
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< imp = importer(content, at, format, self.tempFolder, ns, self.fileNames,
< size=size)
---
> imp = importer(content, at, format, self.tempFolder, ns, self.fileNames)
=======================================================================
file: doc_importers.py
---------------------------------------------------------------------------------------------------
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< def __init__(self, content, at, format, tempFolder, ns, fileNames, size=None):
---
> def __init__(self, content, at, format, tempFolder, ns, fileNames):
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< self.size = size
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< if self.size:
< width, height = self.size
---
> width, height = getSize(self.importPath, self.format)
> if width != None:
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< width, height = getSize(self.importPath, self.format)
< if width != None:
< size = ' %s:width="%fcm" %s:height="%fcm"' % (s, width, s, height)
< else:
< size = ''
---
> size = ''