update version for point release

[evanmcc]

changelog:

miner changes:
Merge pull request #1771 from helium/adt/relcast-serializing
Merge pull request #895 from helium/adt/portable-skip-messages

blockchain from 3c37c31919d48b35518c3931499cb0f5e75de451 to 6ab1c09e65da1750495c9a3e565fd32a7dd93da8

libp2p from 070fea4a05e8a9d7e5cd0af1c9c4c4f7a507aaa7 to 704f6d93da10677a54de9ef9b780e1e7faa98867
Merge pull request #437 from helium/jc/handle_empty_pubkey
Merge pull request #443 from helium/jg/bump_rebar_gpb_plugin

relcast from 9e40445dcd6440c9a2292d0f227d96a86f3d386b to cfe013e5363d06294478078c7baeb808acdb349c
Merge pull request #50 from helium/adt/serialize-native-terms

dkg from 93ed01b6464dcbb6504ba90e43a86656a1dcef90 to 59e10e50d2114c1bb91ae393527122bdbf31a690
Merge pull request #38 from helium/adt/less-serializing

hbbft from f4b8137fd4ac3a54dcaf21ba44856f77b8c97814 to 16a75ba127b745ae8b062b19de0f10dc70e25564
Merge pull request #78 from helium/adt/less-serializing

no changes for: sibyl ecc508 helium_proto```

[Vagabond]

Updated for Paul's fix to h3dex updates:

miner changes:
Merge pull request #1771 from helium/adt/relcast-serializing
Merge pull request #895 from helium/adt/portable-skip-messages

blockchain from 3c37c31919d48b35518c3931499cb0f5e75de451 to 80b008b1215ec08cb1f80064887b697cf499aea4
Merge pull request #1425 from PaulVMo/more-h3dex-lookup-fix

libp2p from 070fea4a05e8a9d7e5cd0af1c9c4c4f7a507aaa7 to 704f6d93da10677a54de9ef9b780e1e7faa98867
Merge pull request #437 from helium/jc/handle_empty_pubkey
Merge pull request #443 from helium/jg/bump_rebar_gpb_plugin

relcast from 9e40445dcd6440c9a2292d0f227d96a86f3d386b to cfe013e5363d06294478078c7baeb808acdb349c
Merge pull request #50 from helium/adt/serialize-native-terms

dkg from 93ed01b6464dcbb6504ba90e43a86656a1dcef90 to 59e10e50d2114c1bb91ae393527122bdbf31a690
Merge pull request #38 from helium/adt/less-serializing

hbbft from f4b8137fd4ac3a54dcaf21ba44856f77b8c97814 to 16a75ba127b745ae8b062b19de0f10dc70e25564
Merge pull request #78 from helium/adt/less-serializing

no changes for: sibyl ecc508 helium_proto

[vihu]

More updates:

helium/blockchain-core#1428
helium/blockchain-core#1426
helium/blockchain-core#1425
helium/sibyl#69