This makes it more obvious (without having to look at the code) that
the basic example is actually an example, rather than something tied to
the other examples or some sort of metadata file.
* rename Log and Logf interface to AddEvent and AddEventf.
- also remove log package.
* provide only AddEvent interface to Span
- Event can be created using Event specific interface.
* add var trick for Event interface.
goimports for import rewritting
golangci-lint as the configurable linting swiss army knife.
These tools are recorded in [tools.go](https://github.com/golang/go/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module). This records
them as a dependency to make sure we're all using the same tool versions.
To make sure this project's tool's versions don't stomp over versions
from other projects, they are installed in ./.tools, which is
.gitignored.
goimports was run and fixed up a single file:
plugin/httptrace/httptrace.go
I prefer to group local packages below external packages, hence the use
of goimports -local option.
.golangci.yml contains nothing but an incomplete set of defaults ATM.
I expect those to change over time though. ;-)
To use, run:
$ make precommit
Fixes#15
