update go to 1.13

Signed-off-by: bblfsh-release-bot <release-bot@bblf.sh>

fix varargs in python 2 files; fixes #199

Signed-off-by: Denys Smirnov <denis.smirnov.91@gmail.com>

update sdk to 3.2.4

Signed-off-by: bblfsh-release-bot <release-bot@bblf.sh>

split import paths; also fix issues with relative-only paths

Signed-off-by: Denys Smirnov <denys@sourced.tech>

switch to go modules

Signed-off-by: Denys Smirnov <denys@sourced.tech>

update the fixture and remove empty noops

Signed-off-by: Denys Smirnov <denys@sourced.tech>

update sdk version

Signed-off-by: Denys Smirnov <denys@sourced.tech>

update sdk version

Signed-off-by: Denys Smirnov <denys@sourced.tech>

Merge pull request #179 from juanjux/fix_sdk

Updates to build with the latest SDK

Merge pull request #180 from juanjux/fix_177

Correctly handle python2 kwargs