Added node modules to gitignore
Corrected csv parsing in csv-sheet-impl.js.
google-docs-fake-infrastrucutre.js: Added logging and it's switching. Implemented sheets management. test-google-docs-model.js (minor changes)
Refactored google-docs-fake-infrastrucutre with usage js classses.
Fixed formatting in google-docs-model.js
Sheets splitted to common lib.
Implemented DoneSummator for summrazing one level async calls.
Fixed error with wrong rows count.
Rewrited test/sheet-lib.js to use rows/cols insted x/y.
Added Utilities calss. Used readonly propertu from Sheet.
Fixed array <-> model index convertion problem in setvalues(...) method.