[twgit] Init feature 'feature-16': Amazon pricing schema deprecated.
FIX EMRInstancePrices bug due to use of deprecated URL. #16
Code quality improvement. #16
[twgit] Init release 'release-1.7.0'.
Merge branch 'feature-16' into release-1.7.0
Add TOC to README.md.
Update dependencies and add Dependency Badge.
Merge branch 'release-1.7.0' into feature-13
FIX: EMR prices are not kept when computing SPOT instances price #13