RQDA 0.2-1
* change of the GUI: add two buttons (new and attribute) to the file tab.
* C2Memo button is removed and right-click of coding label activate the same coding memo widget
* new function of ViewPlainFile
* only update the coding database when the code anchor is removed to avoid the ensuing wrong index
* bugfixes related to highlighting and tooltips (caused by changes of api in up stream packages)
* other bugfixes

RQDA 0.1-9
* widgets are enabled only if they are usable.
* Better code categories management system and various improvements of GUI.
* Click-handler for second half of code-mark.
* Better default color scheme for code mark.
* New function of and().
* New option "both" in "type of retrieval".
* New option of subset in GetAtrr().
* It can handle ' correctly now.
* Upgrade RGtk2 (>=2.12.12).
* Various bugfixes.
