Hints for dhewm3 in main

Hints

• asv-summary-first-word-not-capitalized
  org.dhewm3.Dhewm3.metainfo.xml:7 -
  The summary text does not start with a capitalized word, project name or number.
• asv-developer-name-tag-deprecated
  org.dhewm3.Dhewm3.metainfo.xml:11 -
  The toplevel `developer_name` element is deprecated. Please use the `name` element in a `developer` block instead.
• asv-developer-info-missing
  org.dhewm3.Dhewm3.metainfo.xml -
  This component contains no `developer` element with information about its author.