fixes #3523 - output of help grows with each invocation
fixes #3964 - unable to set global params
fix for unnested unprocessable entity messages
Merge pull request #64 from tstrachota/3523_help_grows

fixes #3523 - output of help grows with each invocation
Merge pull request #67 from tstrachota/3964_global_params

fixes #3964 - unable to set global params
Merge pull request #66 from tstrachota/unprocessable_entity

fix for unnested unprocessable entity messages
Ref #3948 - can't update user