New python:3.7 and renames python:3.6 (ibm-functions#61)

New python:3.7 and renames python:3.6 (ibm-functions#61)

New python:3.7 and renames python:3.6 (ibm-functions#61)

New python:3.7 and renames python:3.6 (ibm-functions#61)

Merge pull request ibm-functions#56 from csantanapr/iam_flex_env_vars

update run handler to accept more environment variables

Merge pull request ibm-functions#56 from csantanapr/iam_flex_env_vars

update run handler to accept more environment variables

Merge pull request ibm-functions#54 from eweiter/issue-53

Update python to 3.6.6 and update runtime packages for July 19

tag 1.9.1

update packages, runtimes bug, and lock travis to repo (ibm-functions#46

)

update watson package to 1.3.5 and other packages (ibm-functions#45)