Configuration UI
transition to offer list
retrieving and basic displaying of offers
added response signature check
rendering of text properties
thumbnail loading
display message when no offers are available; placeholder image
UI polishing
white status bar
documentation in API client header
unit tests for hashing
added a more stable sha1 implementation; added unit test for sha1
unit tests for signature checking
unit tests for offer parsing; additional unit tests for nil inputs
updated readme file
fixed compiler warnings when building for 64bit target