* Defining RIPPLE_PROPOSE_FEATURES enables ledger features
* Reduce dependence on getApp via dependency injection
* Converted uint32 members to use Clock::time_point
* Inject Journal, tidy up classes:
- Features
- FeaturesImpl
- FeeVote
- FeeVoteImpl
* Header-only!
* No external dependencies or other beast modules
* Compilation options allow for:
- Stand-alone application to run a single test suite
- Stand-alone application to run a set of test suites
- Global suite of tests inline with the host application
- Disable test suite generation completely
* Existing tests reworked to use the new classes
* No longer requires its own compiler include path
* Includes use relative paths to locate the file
* Client applications include the file themselves
* Inclusion of BeastConfig.h can be controlled via preprocessor directive
This should fix the crossed order book bug.
* Change OfferCreate::takeOffers to use new iterators
* Change NetworkOps::getBookPage to use new iterators
* If we find an offer in the book but not the ledger, deindex it
