persist TOC in leveldb

[regular]

take care that the code runs in a browser environment too.

use levelgraph

[regular]

use http://github.com/mcollina/levelgraph

Predicates:

• provides_
  • _introduction
  • _explanation
  • _experience
• requires_
  • (same as above)
• aka
• short_for
• part_of
• mentions

Example

Wh should be able to automatically derive relationships like these from the TOC (and therefor from the union of all episode's package.jsons)

{
  "brain": {
    "provides": [
      "number_systems:octal[explanation]",
      "byte[introduction]"
    ],
    "requires": "number_systems:decimal[experience]",
    "synonyms": {
        "octal": {
          "aka": "base8",
          "abbreviation": "oct"
        }
    }
  }
}

positional-notation requires_experience number_system:decimal
positional-notation provides_explanation number_system:octal
positional-notation provides_explanation number_system:binary
positional-notation provides_introduction byte

octal part_of number_system
octal aka base8
oct short_for octal