Preview release with build fix and bug fixes

Bug fixes:

• Fixed a broken unit test that made the build fail for v0.9.4.
• Fixed a bug where mgr loop shutdown wasn't closing all open streams.
• Fixed a bug where Stream.Read would prematurely return an error (either io.EOF or a "real" error) as soon as the error is known, where the correct behavior is to return the error only once all available results have been consumed).
• Fixed a subtle bug with timer usage.

Preview release with improved Query API, improved docs, other improvements

Incite library API improvements.

• Tentatively finalized file-scope Query function signature.
• Normalized some error edge cases and found and added some missing error edge cases.

Package and build improvements.

• Corrected the module minimum supported Go version (to 1.14).
• Added continuous integration with Travis.
• Fixed a couple of linting warnings.

Other improvements.

• Incrementally improved documentation.
• Incrementally increased test coverage.

Preview release with faster tests, simplified API, and bug fixes

Test improvements.

• Tests now run 10X faster (due to allowing RPS limits to be set higher than CWL service quota limits).
• Increased test coverage.

Incite library API improvements.

• Deleted excess CloudWatchLogs action sub-interfaces (e.g. CloudWatchLogsQueryStarter) as these were cluttering the public API documentation without adding value.

Other improvements.

• Fixed a major set of concurrency/deadlock bugs by refactoring the concurrency design to be closer to the Go language philosophy, relying more on channel communication and less on shared memory.
• Incrementally improved documentation.

We are getting closer to a 1.0 release. The main issue that needs to be resolved to make 1.0 happen is fixing the definition and interface of the file-scope Query function. I would like to improve test coverage a bit as well, but that's secondary.

Preview release with simplified API and bug fixes

CloudWatch Logs API support improvements.

• When a query chunk goes into a bad state ensure we always attempt to stop it using StopQuery.
• Re-enable Preview mode support if query text uses stats command.

Incite library API improvements.

• Remove special case unmarshaling of []byte.
• Remove excess interfaces Queryer and Reader.

Other improvements.

• Add more example tests for Unmarshal.
• Simplify *stream.Read implementation by replacing channel with condition.
• Fix bugs in Preview mode result translation logic.
• Fix bugs where chunks weren't always being closed properly.
• Fix some annoying Go-style bugs with closure and range loop variables, improving stability of test framework for scenarios.
• Just generally improve documentation and test coverage.

Preview release with API changes

CloudWatch Logs API support improvements.

• Add Limit field to QuerySpec and improve documentation.
• Fix and document behavior when there's no @ptr field available, e.g. under stats command.
• Fix and document Preview behavior and introduce special @deleted field to communicate when a preview result was deleted from the final result set.
• Support @deleted field in Unmarshal.

Other improvements.

• Fix deadlock and concurrency bugs in both main code and tests.
• Add runnable test examples for Unmarshal.
• Add framework for describing query test scenarios, and add happy path query tests.
• Fix miscellaneous bugs found while testing.

Preview release

This is a pre-release to allow previewing the API and the initial implementation.

There may be small backward-incompatible API changes before v1.0.0 is released, as the API firms up and unit testing continues.