update plugin and dependency versions

  - update plugin and dependency versions: not I only did a minor update of the maven-plugin-api (to 3.0.5 and not upgrade to 3.1.1)
  - fix a deprecation in ScriptCoverageStatistics; related to updating Guava
  - fix previously deprecated, now missing Proxy.setHttpsProxy(...) in GenericInstrumentingBrowser and InstrumentingProxyServerIT; related to updating Selenium
Merge pull request #109 from mprins/version-updates

update plugin and dependency versions
[maven-release-plugin] prepare release saga-root-1.5.1
[maven-release-plugin] prepare for next development iteration
update version
Fix total coverage %
Add total stats to CSV report
[maven-release-plugin] prepare release saga-root-1.5.2
[maven-release-plugin] prepare for next development iteration
update version
Added null check in the instrumentation JavaScript to prevent resetting coverage metrics each time the file is loaded. This was an issue for a project that uses Require.js contexts to isolate the modules for each Jasmine spec, which allows each spec to replace modules with stubs or mocks without impacting the other specs.
Merge pull request #112 from gzimmer/master

Changes to prevent coverage metrics from being reset each time an instrumented file is loaded.