Fixes #1043.

[achaudhary997]

• Added test case for Incorrect turtle serialization of decimal values #1043
• Don't make XSD.Decimal pretty during serialization

[coveralls]

Coverage increased (+0.004%) to 75.654% when pulling 932710a on achaudhary997:fix1043 into 231bc6d on RDFLib:master.

[coveralls]

Coverage increased (+0.004%) to 75.654% when pulling c7c4e15 on achaudhary997:fix1043 into 231bc6d on RDFLib:master.

[nicholascar]

@achaudhary997 please merge in master branch since a whole host of changes were recently merged in to remove Python 2 code. Looks like you will have a conflict or two to resolve also. This will trigger a re-checking of the code by Travis. Then it may be ready for merging.

[nicholascar]

We've done testing: it looks like the ".0" should be added but only if there is no decimal point and no e or E.

[ashleysommer]

I've merged latest master changes into this, and resolved the conflict. I also took the opportunity to make the change myself that was suggested above:

the ".0" should be added but only if there is no decimal point and no e or E.

I'll double check that the test passes, then merge this.