RFC5322 Extended support for RFC850 and ANSI-C Time

[Feature:4] Addition of RFC850 and ANSI-C tolerance (default = false) to the RFC5322 string to time method.
[Feature:3] Added support for UTC Offset letters (A thru Y) + GMT/UT

Fix for DST on ISO8601 and RFC5322 methods

[Fix: 6] ISO and RFC5322 timestamps could be off 1 hour during DST when not using timezone
[Feature] Added "isDST?" method
[Feature] Added helper methods for merging/splitting integer + fractional time

Epoch Date & Time Initial Release

See issue #1 for documentation about this new library