Update the documentation wrt to old and new

Update the examples to new luerl api

Merge pull request #195 from rvirding/private-data

fix docs

add tests for Elixir

cleanup

docs

implement elixir api

add tests

API for storing and retrieving "private" data

Merge pull request #196 from rvirding/fix-tests

Fix tests on develop-encode

API for storing and retrieving "private" data

API for storing and retrieving "private" data

Fix the Elixir interface modules for luerl and luerl_old

First complete test version of new luerl

Check if calling #erl_func and #erl_mfa return a list

Check if calling #erl_func and #erl_mfa return a list

Encoded/decoded functions explicit encoding/decoding of arguments

Set version to 1.2.3

Set version to 1.2.3

Check if erlfunc return a list

Include value in badarg encoding

Throw errors if erlfunc returns a non-list

Include value in badarg encoding

fix formatting

all tests passing

port fix to luerl module

Fix callbacks not modifying Luerl state