move 3 modules. Check if yield and generators should be merged
Check if we must change name
add explanation of reference assignment and copy
[MINOR] Added README in to each block folder
[MINOR] Fixed two typos
Merge branch 'master' into fill_intermediate_modules
feedback in pull requests
Merge pull request #31 from ealogar/fill_intermediate_modules

Fill intermediate modules
Add more examples to pymongo
Moved data model exercises and minor changes
Typo in root level README
Moved data model context manager stuff to context managers module
Fixed index in advanced README
Merge pull request #33 from pablito56/update_intermediate_round_2

Update intermediate round 2
Merge pull request #32 from ealogar/pymongo_course

Add more examples to pymongo
Enhanced mutables vs immutables module explanations and examples. Exercises stay the same
Moved generators data model to mod_05 and added coroutines explanation
Minor changes in intermediate mod 06 itertools
Added mistakenly removed examples of shallow and deep copy in mutables module
Typo in mutables module