Major Refactor

[icholy]

This is a pretty big refactor that introduce breaking changes. Let me know what you think.

Breaking changes

• Add Date & Time types.
• Convert numeric fields to either float64 or int64.
• Rename Sentence to Sent
• Rename Sent.GetSentence() to Sent.Sentence()
• Rename SentenceI to Message
• Rename NewLatLong to ParseLatLong

Non-Breaking changes

• Add ParseSentence(string)
• Add Sent.Prefix() string
• Add nmea: prefix to error messages.
• Unify error message format.
• Add parser to simplify sentence parsing.

[coveralls]

Coverage increased (+3.0%) to 90.081% when pulling 28e43e6 on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+3.0%) to 90.081% when pulling 28e43e6 on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+3.4%) to 90.486% when pulling f4a1466 on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+2.4%) to 89.504% when pulling b310829 on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+3.7%) to 90.76% when pulling 94fb2ae on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+3.9%) to 90.965% when pulling d1efd26 on icholy:master into c227bc3 on adrianmo:master.

[coveralls]

Coverage increased (+9.6%) to 96.721% when pulling 7a45390 on icholy:master into c227bc3 on adrianmo:master.

[bogdanprodanj]

Fix typo

[icholy]

@bogdanprodanj I doubt this is going to get merged.

[adrianmo]

@icholy thank you very much for the time you took to improve the library. I really like your changes, specially, the way you have simplified and unified the parsing process. But before merging it, I would like to ask you the following:

• provide a parser_test.go to cover the new parser.go generic parser helper.
• provide coverage for the new lines introduced in sentence.go and types.go. Exact lines here and here marked as "NEW".
• fix the golint offenses. It's not breaking the tests because we need to add the new -set_exit_status flag to the golint command in .travis.yml. Can you add that too? :)
• fix the typo mentioned by @bogdanprodanj

Thanks again. I really appreciate your work.

[icholy]

@adrianmo I didn't notice your message till right now. I'll update the pr asap.

[adrianmo]

Great @icholy :)

[icholy]

@adrianmo ready for review, bumped your coverage by 10% ;). I skipped the test for Sentence.Validate, I don't think it makes sense to test a function that returns nil. But if you really want me to, let me know and I'll add it.

[adrianmo]

@icholy thank you for making the changes. I'm merging this PR now.