Remove debug trace and arrow heads
verhelp tikfoutje
Add Dir Both where we want an arrow tail + Remove NoArrow tails

Apparently it's a graphviz 'feature' to not draw arrow tails unless 'Dir Both' is specified.
Compute aggregations
Use aggChild/aggParent instead of aggSrc/aggTgt
Disable aggregates

We first need to establish the correct conditions that determine whether a relation is an aggregate. With the currently implemented conditions, some relations that are clearly not aggregates will nevertheless be considered as such.
Merge pull request #15 from AmpersandTarski/show-aggregations-in-logical-data-model

Show aggregations in logical data model

Code is currently disabled.
More elegant way to call latex on non-windows

- Show tail of latex output on error, don't show anything otherwise. (showing all output on --verbose effectively renders that option useless, as the massive latex output drowns all other information)
- Don't allow interactive mode. This fixes Ctrl-C problems, and in the rare case that the generated latex is incorrect but should be compiled anyway, this can be done manually on the generated tex file.
Use the same execution method for Windows and non-Windows

Executing latex in the output directory is simpler than using MikTex-specific commands to refer to this directory. The installer is no longer disabled, since it works fine, even when not in interactive mode.
COMMITTED STASH