Analyze and document levelization:

* Markdown explanation of what levelization is, the intended levels, as
  well as the process used to determine dependencies
* Shell script finds all dependencies, groups them, and finds cyclic
  dependencies and maps out non-cyclic dependencies.
* Github job to run the script and fail if anything changes. Should
  catch introduction of new dependencies and new problems. Will also
  detect changes if problems or dependencies are removed.

Builds/levelization/results/loops.txt

@@ -0,0 +1,54 @@
+Loop: ripple.app ripple.core
+  ripple.app > ripple.core
+
+Loop: ripple.app ripple.ledger
+  ripple.app > ripple.ledger
+
+Loop: ripple.app ripple.net
+  ripple.app > ripple.net
+
+Loop: ripple.app ripple.nodestore
+  ripple.app > ripple.nodestore
+
+Loop: ripple.app ripple.overlay
+  ripple.overlay ~= ripple.app
+
+Loop: ripple.app ripple.rpc
+  ripple.rpc > ripple.app
+
+Loop: ripple.app ripple.shamap
+  ripple.app > ripple.shamap
+
+Loop: ripple.basics ripple.core
+  ripple.core > ripple.basics
+
+Loop: ripple.basics ripple.json
+  ripple.json ~= ripple.basics
+
+Loop: ripple.basics ripple.protocol
+  ripple.protocol > ripple.basics
+
+Loop: ripple.basics ripple.rpc
+  ripple.rpc > ripple.basics
+
+Loop: ripple.core ripple.net
+  ripple.net > ripple.core
+
+Loop: ripple.crypto ripple.protocol
+  ripple.protocol > ripple.crypto
+
+Loop: ripple.net ripple.rpc
+  ripple.rpc > ripple.net
+
+Loop: ripple.nodestore ripple.overlay
+  ripple.overlay == ripple.nodestore
+
+Loop: ripple.overlay ripple.rpc
+  ripple.rpc ~= ripple.overlay
+
+Loop: test.jtx test.toplevel
+  test.toplevel > test.jtx
+
+Loop: test.jtx test.unit_test
+  test.unit_test == test.jtx
+

Builds/levelization/results/ordering.txt

@@ -0,0 +1,219 @@
+ripple.app > ripple.basics
+ripple.app > ripple.beast
+ripple.app > ripple.conditions
+ripple.app > ripple.consensus
+ripple.app > ripple.crypto
+ripple.app > ripple.json
+ripple.app > ripple.protocol
+ripple.app > ripple.resource
+ripple.app > test.unit_test
+ripple.basics > ripple.beast
+ripple.conditions > ripple.basics
+ripple.conditions > ripple.protocol
+ripple.consensus > ripple.basics
+ripple.consensus > ripple.beast
+ripple.consensus > ripple.json
+ripple.consensus > ripple.protocol
+ripple.core > ripple.beast
+ripple.core > ripple.json
+ripple.core > ripple.protocol
+ripple.crypto > ripple.basics
+ripple.json > ripple.beast
+ripple.ledger > ripple.basics
+ripple.ledger > ripple.beast
+ripple.ledger > ripple.core
+ripple.ledger > ripple.json
+ripple.ledger > ripple.protocol
+ripple.net > ripple.basics
+ripple.net > ripple.beast
+ripple.net > ripple.json
+ripple.net > ripple.protocol
+ripple.net > ripple.resource
+ripple.nodestore > ripple.basics
+ripple.nodestore > ripple.beast
+ripple.nodestore > ripple.core
+ripple.nodestore > ripple.protocol
+ripple.nodestore > ripple.unity
+ripple.overlay > ripple.basics
+ripple.overlay > ripple.beast
+ripple.overlay > ripple.core
+ripple.overlay > ripple.json
+ripple.overlay > ripple.peerfinder
+ripple.overlay > ripple.protocol
+ripple.overlay > ripple.resource
+ripple.overlay > ripple.server
+ripple.peerfinder > ripple.basics
+ripple.peerfinder > ripple.beast
+ripple.peerfinder > ripple.core
+ripple.peerfinder > ripple.protocol
+ripple.protocol > ripple.beast
+ripple.protocol > ripple.json
+ripple.resource > ripple.basics
+ripple.resource > ripple.beast
+ripple.resource > ripple.json
+ripple.resource > ripple.protocol
+ripple.rpc > ripple.beast
+ripple.rpc > ripple.core
+ripple.rpc > ripple.crypto
+ripple.rpc > ripple.json
+ripple.rpc > ripple.ledger
+ripple.rpc > ripple.nodestore
+ripple.rpc > ripple.protocol
+ripple.rpc > ripple.resource
+ripple.rpc > ripple.server
+ripple.rpc > ripple.shamap
+ripple.server > ripple.basics
+ripple.server > ripple.beast
+ripple.server > ripple.crypto
+ripple.server > ripple.json
+ripple.server > ripple.protocol
+ripple.shamap > ripple.basics
+ripple.shamap > ripple.beast
+ripple.shamap > ripple.crypto
+ripple.shamap > ripple.nodestore
+ripple.shamap > ripple.protocol
+test.app > ripple.app
+test.app > ripple.basics
+test.app > ripple.beast
+test.app > ripple.core
+test.app > ripple.json
+test.app > ripple.ledger
+test.app > ripple.overlay
+test.app > ripple.protocol
+test.app > ripple.resource
+test.app > ripple.rpc
+test.app > test.jtx
+test.app > test.rpc
+test.app > test.toplevel
+test.app > test.unit_test
+test.basics > ripple.basics
+test.basics > ripple.beast
+test.basics > ripple.json
+test.basics > ripple.protocol
+test.basics > ripple.rpc
+test.basics > test.jtx
+test.basics > test.unit_test
+test.beast > ripple.basics
+test.beast > ripple.beast
+test.conditions > ripple.basics
+test.conditions > ripple.beast
+test.conditions > ripple.conditions
+test.consensus > ripple.app
+test.consensus > ripple.basics
+test.consensus > ripple.beast
+test.consensus > ripple.consensus
+test.consensus > ripple.ledger
+test.consensus > ripple.rpc
+test.consensus > test.csf
+test.consensus > test.toplevel
+test.consensus > test.unit_test
+test.core > ripple.basics
+test.core > ripple.beast
+test.core > ripple.core
+test.core > ripple.crypto
+test.core > ripple.json
+test.core > ripple.server
+test.core > test.jtx
+test.core > test.toplevel
+test.core > test.unit_test
+test.crypto > ripple.beast
+test.crypto > ripple.crypto
+test.csf > ripple.basics
+test.csf > ripple.beast
+test.csf > ripple.consensus
+test.csf > ripple.json
+test.csf > ripple.protocol
+test.json > ripple.beast
+test.json > ripple.json
+test.json > test.jtx
+test.jtx > ripple.app
+test.jtx > ripple.basics
+test.jtx > ripple.beast
+test.jtx > ripple.consensus
+test.jtx > ripple.core
+test.jtx > ripple.json
+test.jtx > ripple.ledger
+test.jtx > ripple.net
+test.jtx > ripple.protocol
+test.jtx > ripple.server
+test.ledger > ripple.app
+test.ledger > ripple.basics
+test.ledger > ripple.beast
+test.ledger > ripple.core
+test.ledger > ripple.ledger
+test.ledger > ripple.protocol
+test.ledger > test.jtx
+test.ledger > test.toplevel
+test.net > ripple.net
+test.net > test.jtx
+test.net > test.toplevel
+test.net > test.unit_test
+test.nodestore > ripple.app
+test.nodestore > ripple.basics
+test.nodestore > ripple.beast
+test.nodestore > ripple.core
+test.nodestore > ripple.nodestore
+test.nodestore > ripple.unity
+test.nodestore > test.jtx
+test.nodestore > test.toplevel
+test.nodestore > test.unit_test
+test.overlay > ripple.app
+test.overlay > ripple.basics
+test.overlay > ripple.beast
+test.overlay > ripple.core
+test.overlay > ripple.overlay
+test.overlay > ripple.protocol
+test.overlay > ripple.shamap
+test.overlay > test.jtx
+test.overlay > test.unit_test
+test.peerfinder > ripple.basics
+test.peerfinder > ripple.beast
+test.peerfinder > ripple.core
+test.peerfinder > ripple.peerfinder
+test.peerfinder > ripple.protocol
+test.peerfinder > test.beast
+test.peerfinder > test.unit_test
+test.protocol > ripple.basics
+test.protocol > ripple.beast
+test.protocol > ripple.crypto
+test.protocol > ripple.json
+test.protocol > ripple.protocol
+test.protocol > test.toplevel
+test.resource > ripple.basics
+test.resource > ripple.beast
+test.resource > ripple.resource
+test.resource > test.unit_test
+test.rpc > ripple.app
+test.rpc > ripple.basics
+test.rpc > ripple.beast
+test.rpc > ripple.core
+test.rpc > ripple.json
+test.rpc > ripple.net
+test.rpc > ripple.nodestore
+test.rpc > ripple.overlay
+test.rpc > ripple.protocol
+test.rpc > ripple.resource
+test.rpc > ripple.rpc
+test.rpc > test.jtx
+test.rpc > test.nodestore
+test.rpc > test.toplevel
+test.server > ripple.app
+test.server > ripple.basics
+test.server > ripple.beast
+test.server > ripple.core
+test.server > ripple.json
+test.server > ripple.rpc
+test.server > ripple.server
+test.server > test.jtx
+test.server > test.toplevel
+test.server > test.unit_test
+test.shamap > ripple.basics
+test.shamap > ripple.beast
+test.shamap > ripple.nodestore
+test.shamap > ripple.protocol
+test.shamap > ripple.shamap
+test.shamap > test.unit_test
+test.toplevel > ripple.json
+test.toplevel > test.csf
+test.unit_test > ripple.basics
+test.unit_test > ripple.beast