Merge pull request #35 from keenlabs/19-keenclient-should-use-arc

Converted all files to ARC
Renamed sqlite amalgamation files with keen_io_ prefix, moved header include to KIOEventStore.m from .h
Added class method for SDK Version number retrieval
Merge pull request #37 from keenlabs/29-rename-sqlite-amalgamation-files

Renamed sqlite amalgamation files with keen_io_ prefix
Merge pull request #38 from keenlabs/30-keen-sdk-version-class-method

Added class method for SDK Version number retrieval
Added convertNSDateToISO8601 method to KIOEventStore to remove dependency on NSDateFormatter
Merged previous fixes
Tweaked sqlite threading
Updated sqlite date conversion method to include Etc/GMT as +
Removed all traces of NSDateFormatter
Added resetPendingEvents to getEvents
Refactored KEEN_LOGGING_ENABLED macro
Merge pull request #40 from keenlabs/31-nsdateformatter-is-not-thread-safe

Refactored NSDate formatting to be thread safe
Fixed call to importFileData in uploadHelper
Merge branch 'master' into 33-keen-logging-enabled-macro-is-misdefined
Merge branch 'master' into 32-non-shared-client-improvements
Merge pull request #41 from keenlabs/33-keen-logging-enabled-macro-is-misdefined

Refactored KEEN_LOGGING_ENABLED
Merge branch 'master' into 39-reset-pending-events-should-be-called
Merge branch 'master' into 32-non-shared-client-improvements
Merge pull request #42 from keenlabs/39-reset-pending-events-should-be-called

Added call to resetPendingEvents in getEvents