update default heroku postgresql database
Bump heap to 1gb
Export Environment from Third Argument

Exports the environment from a key-value file provided by the third
argument to `bin/compile`. Provides a blacklist of environment
variables that can cause problems with builds.
Move export env to common for testability
Ensure more than one thing is exported.
Merge pull request #33 from heroku/env-file

Export Environment from Third Argument
Change to envdir with debug
Remove trailing slash when loading env
Improve tests for env loading wrt new lines
Use export_env_dir from jvm-common
Merge pull request #35 from heroku/envdir-sourced

use export_env_dir sourced from JVM common
Merge pull request #32 from catsby/update_default_postgresql

update default heroku postgresql database
Merge branch 'master' into dpupaza-master
added functionality to append custom settings.xml content to Heroku provided settings.xml