KeenClient PHP Versions Save

Sends queries using POST instead of GET

• Fixes a compatibility issue on query return values, introduced in 2.5.7. Thanks @stof!

• Lots of Guzzle Updates
• SDK Tracking

• Added Saved Queries and Project Creation
• Updated minimum php and phpunit versions
• Added use of organizationID

• Fixes an issue where passing an empty version parameter would cause an error (#70)

• Switches createScopedKey method to use MCRYPT_DEV_URANDOM by default, see #53

• Fixes naming on operation: getEventSchemas to getCollections
  • keeps original as an extended operation to support BC
• Adds getCollection method
• Adds getProperty method
• Minor fixes

• Fix a bug when using analytics method (first parameter is now considered the event collection, as before)
• Allow to specify absolute timeframe

• All commands can now be used with a master key.
• [BC] Method deleteEvent has been renamed to deleteEvents as it allows to delete multiple events.
• [BC] getScopedKey has been renamed createScopedKey to better reflect its purpose.
• [BC] createScopedKey and decryptScopedKey no longer need an API key: it just reuses the one set in the client.
• [BC] The client provides shortcut for the addEvent and addEvents methods.

Brings the Guzzle based Keen IO Client to PSR 2 standards and adds the delete methods now provided by the Keen IO API.