A minor change

I found a bug (sort of) in Concord a couple of days ago. It's a minor bug and this happens only when you use the database mode in Concord. Well, it's more of memory leak. I implemented a forced garbage collection when full text is displayed in the context view of Concord, but somehow memory is not released. So I changed the way to read the text from a database file. Now it should not keep using additional memory when you select a different concordance line to show full text.

I use the same technique to read data from a database file when CasualConc searches a string, but if I implemented the same change to the search function, it used more memory because the search returns more hits. What this means is if you search word(s)/phrase(s) in any of the tools many times, CasualConc keeps using memory. I haven't tested if it uses up all the available memory and starts using virtual memory or if Ruby starts GC when it uses up all the available physical memory. In any case, until I can find a way to solve this problem, you might want to quit CasualConc after a while and restart it.