Merge tag '1.3.6' into develop

Release 1.3.6.

* Get all lines of error output into the error string to facilitate
  trouble shooting.
Revert "Get all lines of error output into tex log string."

This reverts commit b5d2115b6056b86794aaf35ef405870c53991e62.
Handle multiple instances of error lines.
Code cleanup.
Update release information.
Merge branch 'release/1.3.7'