Upgrade httpotion

Signed-off-by: chatgris <julien@stormz.me>
Fix binary_to_atom

Signed-off-by: chatgris <julien@stormz.me>
Fix test on options parsing

Signed-off-by: chatgris <julien@stormz.me>
Upgrade Elixir version

Signed-off-by: chatgris <julien@stormz.me>
Upgrade jsex

Signed-off-by: chatgris <julien@stormz.me>