Merge pull request bblfsh#67 from juanjux/fix/version_bump

Version 2.8.0

Merge pull request bblfsh#65 from juanjux/feature/deny_nonUTF8

Check for non UTF8 contents + test. Factorize content loading.

Merge pull request bblfsh#59 from juanjux/upgrade_sdk

Upgrade to SDK 1.8.0 to get the Language field in Responses.

Merge pull request bblfsh#58 from juanjux/feature/aliases

Adds imported symbols deep from the protofiles.

Merge pull request bblfsh#56 from abeaumont/feature/improve-error-han…

…dling

libuast: Bump to 1.4.1 and improve error handling

Merge pull request bblfsh#55 from juanjux/fix/tools_dependency

Added grpcio-tools dependency to setup.py, remove unneeded code

Merge pull request bblfsh#54 from juanjux/feature/version_parsenative

Added "native_parse" and "version" requests.

Merge pull request bblfsh#53 from juanjux/fix/manifest_gogoproto

Bugfixes

Merge pull request bblfsh#52 from juanjux/feature/nomakefile

Get protofiles from SDK release. Remove Makefile.

Merge pull request bblfsh#47 from juanjux/update_sdk

Update SDK