Fixed SheetStacks generated by measure_cog
Applied compatibility fixes for recently merged DataViews pull request
Moved contents of command/analysis.py to analysis/command.py

Now that featuremapper exists as a separate project, all remaining
analysis commands can be moved to topo.analysis in order to avoid cyclic
imports (e.g for setting up Collector hooks). The file
topo/command/analysis.py has been kept for legacy support.
Removed deprecated version of Collector
Updated measure_cog to return an AttrTree
Updated measure_cog to use measurement_storage_hook
Configured storage and Collector hooks for measure_cog
Added .gitattributes for git archive support with param.Version
Disabling measurement storage hooks in IPython Notebook
Fixed incorrect import of measure_cog
Setting up Collector interval_hook and time_fn in __init__.py
Fixed bug in featureresponses where 'Time' dimensions wasn't capitalized
Removed TemporalScatter which was accidentally included in last commit
Updated boundingregion import in testplot
Updated submodules in external
Fixed Dimension lookup causing unit test failure
Updated imagen and dataviews submodule references
Updated dataviews and imagen submodule references
Made all Features lower case in Topographica and submodules
Updated param submodule reference