fix: when body is empty, GitHub may returns None (Mergifyio#130)

git-pull-request 6.0.1

git-pull-request 6.0.0

git-pull-request 5.0.1

git-pull-request 5.0.0

Merge pull request Mergifyio#84 from jd/add-label

Allow to set labels to pull request when sent

Merge pull request Mergifyio#77 from edouard-lopez/allow-lowercase-pu…

…ll-request-template-filename

lookup for lowercase filename for PR template

git-pull-request 4.2.1

git-pull-request 4.1.0

git-pull-request 4.0.0