Fix exception raised due to time zone offset transition for Brazilian time zone.

In Brazil, DST clock shifts occur at midnight, so some instants generated by IndexArbitraries were invalid.
Pass America/New_York time zone to constructor.
Merge pull request #60 from andrelfpinto/fix-instants-brazil

Fix exception raised due to time zone offset transition for Brazilian time zone
Made Vec, Index, Series, Mat and Frame Serializable, added serialization UT and increased build number to 1.3.4
Bump versions
Bump travis versions
Fix merge issue
Bump scala versino
Fix dependencies
Rollback specs2 version
Prepare version release
Updated docs via new compile; publish 1.3.4
Merge 1.3.4 and bump to 1.3.5-SNAPSHOT
Revert to 1.3.3 - missed a version
Revert version to 1.3.3
Up to 1.3.4-SNAPSHOT