Prior PR, plus exception declarations

[barrychapman]

Added exception declarations to the PHP Doc blocks.

[barrychapman]

Not entirely sure why the travis build is failing, it appears to be a configuration issue?

[beporter]

This is the first time this project has run a Travis build in good long while. I'm sure something's out of date.

[barrychapman]

Gonna try resubmitting request.. not sure why it failed there. Seems to be a conf issue with oauth

  [RuntimeException]                       
  github-oauth.github.com is not defined.  ```

[barrychapman]

The problem is this:
composer config -g github-oauth.github.com $GITHUB_TOKEN

That variable is either blank, or something else. Since GH said there are no conflicts, can you merge this? I use this on a lot of projects :) And I don't want to go thru the mess of forking it!

[barrychapman]

@beporter see this issue:

crysalead/chaos-orm#1

[beporter]

Unfortunately I’m not a maintainer on the project anymore, so I don’t have the ability to merge (or to fix the Travis env var.) I think the best I can do to help is ping @ricog and @kriskd to see if maybe they can assist here.

[barrychapman]

@ricog @kriskd can you guys assist?

[barrychapman]

@justinyost can you assist here?

[justinyost]

@barrychapman looks like @kriskd just merged the fix for the github tokens for Travis.

[kriskd]

@barrychapman If you can rebase your work and fix that conflict, I can get your PR approved and merged.