More multi-package coverage changes

Relates to #240

.gitignore

@@ -10,5 +10,4 @@ vendor/
 ### Files ###
 #############
 *.ivf
-tags
-.coverprofile
+tags

.travis.yml

@@ -13,16 +13,14 @@ before_install:
 
 before_script:
   - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b $GOPATH/bin v1.10.2
-  - go get github.com/mattn/goveralls github.com/modocache/gover
+  - go get github.com/mattn/goveralls
 
 script:
   - bash .github/build-examples.sh
   - rm -rf examples
   # Remove examples, no test coverage for them
   - golangci-lint run
-  - go list -f '{{if len .TestGoFiles}}"go test -coverprofile={{.Dir}}/.coverprofile {{.ImportPath}}"{{end}}' ./... | xargs sh -c
-  - gover
-  - goveralls -v -race -coverprofile=gover.coverprofile -service=travis-ci
+  - goveralls -v -race -covermode=atomic -service=travis-ci
   - bash .github/assert-contributors.sh
   - bash .github/lint-disallowed-functions-in-library.sh
   - bash .github/lint-commit-message.sh