Merge branch 'hotfix/v0.8.1'

* hotfix/v0.8.1:
  Fixed cookie domain
  Bumped version to 0.8.1
Use PdoSessionHandler
Bumped version to 0.8.2
Merge branch 'hotfix/v0.8.2' into develop

* hotfix/v0.8.2:
  Bumped version to 0.8.2