Added a Where to Begin section to Ch. 1 that should point readers in the right direction based on what they want to learn about.
Added reference to QueryExecutor section from the module manager.
Continued expansion of the QueryExecutor section to include a high level overview of how modules usually interact with the QueryExecutor.
Removed reference to binary file Semanteco.synctex.gz. Binary files should not be committed to git.
Expanded on chapter 4, user interface components of SemantEco