Precompiled elixir on travis
Use template1 database when running psql commands for ecto.create and ecto.drop.
Merge pull request #260 from drewolson/create_drop_with_postgres_db

Use postgres database when running psql commands for ecto.create and ecto.drop.
Postgrex returns error tuples
Fix misplaced }
Update expression examples
Merge pull request #263 from knewter/feature/update_expression_examples

Update expression examples
Update readme with new repo supervision instructions
Allow "reverse" assoc selectors

Allow starting the assoc selection from a joined association or
building it from *right* outer joins.
Revert "Only compile-time optimize queries for local or required modules"

This reverts commit 2265f6b46fdc13dcee271e299491cb303d2c6a46.
Fix from builder optimisation when building queries

Construct the query at compile time but move the only dynamic part of
query (the model’s source) to runtime.

This removes unnecessary compile time dependencies between modules but
still keeps the optimisation.
Merge pull request #266 from elixir-lang/emj-fix-builder-opt

Fix from builder optimisation when building queries