descriptions of entries checked and either incorporated to keywords and inspirations or redundancies removed

entries/song_of_albion.md

@@ -2,7 +2,7 @@
 
 - Home: https://code.google.com/archive/p/songofalbion/
 - State: mature, inactive since 2011
-- Keyword: strategy
+- Keyword: strategy, medieval
 - Code repository: https://github.com/rayjohannessen/songofalbion.git, https://code.google.com/archive/p/songofalbion/source
 - Code language: C, C++
 - Code license: Apache-2.0