OTP_VERSION=20.0
OTP_SRC_SUM=548815fe08f5b661d38334ffa480e9e0614db5c505da7cb0dc260e729697f2ab
REBAR_VERSION=2.6.4
REBAR_SRC_SUM=577246bafa2eb2b2c3f1d0c157408650446884555bf87901508ce71d5cc0bd07
REBAR3_VERSION=3.4.1
REBAR3_SRC_SUM=fa8b056c37ed3781728baf0fc5b1d87a31edbc5f8dd9b50a5d1ad92b0230e5dd