Cleanup limit setting in Quantity constructor
Add ready badge from waffle
Add in-progress badge
Check limit units

fixes #312
Test limit units in setters
Check limit bounds
Test limit bounds
Merge pull request #323 from ufo-kit/ready-badge

Add ready badge from waffle.io
Merge pull request #321 from ufo-kit/check-limit-unit

Check limit unit
Add convert attribute to cameras

for manipulating frames before they are returned by grab, fixes #325
Test frame conversion
Update the docs

Including showing the camera module docstring.
Update FlatCorrectedBackproject flat correction

for ufo-filters PR #35
Add process coroutine filter

which takes a callable, applies it and forwards the data.
Test process filter
Merge pull request #324 from ufo-kit/generic-coroutine

Generic coroutine
Merge pull request #326 from ufo-kit/grab-convert

Grab convert
Add intensity normalization
Test intensity normalization
Merge pull request #328 from ufo-kit/rescale-image

Normalize image intensities