Add @Override annotations

[simon04]

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[zubot]

This change is 

[codecov]

Codecov Report

Merging #10 into master will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #10   +/-   ##
=========================================
  Coverage     61.46%   61.46%           
  Complexity      151      151           
=========================================
  Files            15       15           
  Lines          1051     1051           
  Branches        122      122           
=========================================
  Hits            646      646           
  Misses          343      343           
  Partials         62       62

Impacted Files	Coverage Δ	Complexity Δ
...d/tennera/jgettext/catalog/parse/CatalogLexer.java	78.51% <ø> (ø)	9 <0> (ø)	⬇️
...fedorahosted/tennera/jgettext/util/NoOpWriter.java	0% <ø> (ø)	0 <0> (ø)	⬇️
...ava/org/fedorahosted/tennera/jgettext/Catalog.java	43.24% <ø> (ø)	8 <0> (ø)	⬇️
...edorahosted/tennera/jgettext/util/LocaleUtils.java	0% <ø> (ø)	0 <0> (ø)	⬇️

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