Merge pull request xlwings#806 from ZoomerAnalytics/xltrail-804-fix-C…

…OM-wrapper

fixed COM retrywrapper

fixed release notes

bumped year

updated standalone files

updated docs for 0.11.3

bumped version and added release docs

Merge pull request xlwings#698 from ZoomerAnalytics/v0.11-docs

added docs

Merge pull request xlwings#691 from ZoomerAnalytics/addin

Addin

Merge branch 'develop':v0.10.4 release

Merge branch 'develop':v0.10.3 release