Merge pull request #85 from seancorfield/master

Prep for 0.6.0 release
Merge pull request #86 from seancorfield/master

Start 0.6.1 dev stream
Upgrade Joda Time to 2.3, fixes #81
Added extra example to make more explicit how nice the protocols are - per aaelony on IRC
Merge pull request #87 from bitemyapp/patch-2

Added extra example to make more explicit how nice the protocols are - p...
Add helpful deprecation messages for deprecated functions
Merge pull request #88 from vedang/master

Add helpful deprecation messages for deprecated functions