* Make suitableType() be Endpoint method
With this change it becomes possible to work with endpoint
of empty type in packages other than "provider". Also
it seems logical for a smart property getter without side effects
to be a method rather than a function in different package
* Make plan computation work correctly with multi-target domains
* fix drawing
* drop comments
* fix boilerplate header
* fix comment
* fix the bug with empty map
* rework registry to support random lables
* serialize->serializeLabel function rename
* golint for err variable naming
* add additional test
* add tests for current case where one resource can generate multiple endpoints
* make labels have its own type, add serialization as a method
* add comment for exported error
* use greater rather than not equal zero
* update changelog
* Add RecordTTL
* Route53: test for custom TTL
* Fix tests
* Fix remaining tests
* Add ttl when endpoint is created from ingress
* Missed a word
* Fix bad refactoring
* Add ingress custom TTL test
* gofmt
* Satisfy go-lint
* Unshadow `endpoint` in azure provider
* Fix and add an output test
* Add TTL for endpoints generated from service templates
* Take TTL into account when generating update plan
* Tests for TTL change impact on the plan
* Refactor factory method name
* Refactoring
* Run gofmt
* Make endpoint string format look like BIND config
* Update plan and plan_test
* Replace NewEndpointWithTTLValue with NewEndpointWithTTL in aws
* Remove NewEndpointWithTTLValue func
* Update references to TTL
* Remove getTTLValue func
* Handle merge conflict
* Update tests
* Update README, CHANGELOG and documentation
* Run gofmt
* Move getTTLFromAnnotations to a common file
* Refactor getTTLFromAnnotations
* Gofmt
* Add tests for getTTLFromAnnotations
* Trigger build
* Add boilerplate header
* Update README/CHANGELOG according to code review
* Add ttl.md and link it from README
* change CNAME string to endpoint.RecordTypeCNAME
* fix test cases with AWS ALIAS records, these do not behave different in these tests
* kickoff txt registry
* fix inmemory dns provider to include recordtype info for validation
* Merge master
* fix ununsed variable in inmemory provider
* add tests for records
* add test for no prefix name formatter
* implement apply changes with tests
* add flag to enable txt registry
* add txt registry to main
* improve sort testing
* filter out non-owned records
* NewEndpoint(...) requires record type
* use newendpoint in aws_test, fix tests
* change suitable type implementation
* fix the test for compatibility component
* change inmemory provider to include recordtype and use suitable type
* fix comments, CNAME should target hostname
* name mapper do not use pointer on struct
* txt prefix - just concatenate, remove spew, fix txt record label
* allow TXT records as result from dns provider
* add changelog
* fix tests
* TXT records need to be enclosed in double quotes
