revert addition of templating and stream-based collections - moved to branch templates
Backed out changeset 771cfcb29185

Create feature branch for templates

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branch : templates
created purist-map branch

--HG--
branch : purist-map
added u.end

--HG--
branch : purist-map
skipping nils

--HG--
branch : purist-map
skipping nils in map

--HG--
branch : purist-map
more functional approach

--HG--
branch : purist-map
more functional approach for each

--HG--
branch : purist-map
working char location stream

--HG--
branch : templates
merged current templates status