SaveAs / LoadFrom / Compression

[khaledkee]

• Added saveManger for Trie.
• Add loadFromFile and saveAs (closes #31 ).
• Used XWRT to compress XML file (closes #30).
• Added LoadThread.
• Added open program from command line with another history file.
• Notes:
  • LoadFromFile clears the log first, I'm thinking of merging the tries instead of clearing.
  • .gitignore don't allow .exe files, you should include xwert32.exe 3.4.
  • We're using static dicitionary compression. wrt-eng contains nearly all english words. We should include only words may exist in the XML file for better compression.
  • ext.reg is supposed to be the registry command to include our program in the file context menu (change our path to the path of CalculatorUI.exe).

[sallam-ahmed]

This commit closes #29 too, xml.xwrt is compressed that the user cannot read it using text editors.