+* files with multi-byte chars and ast.parse()
+* not reimporting back imports after moving
* not applying all commenting mechanisms always in codeassist
* fixing try blocks before current line in code_assist
* searching all files when extracting a global method?
* using similarfinder in introduce_parameter?
* removing unused refactorings?
+* assignments and overwriting parameter, imported and evaluated names
* unignored files that are not under version control
* multiple ropes on one project; problems for objectdb and history
* should `rope.base` be thread safe?
* recursive soi; go where the calls go with limited depth
* adding ``do when unsure`` config to all refactorings?
* importing star and removing self imports; stack overflow
+* adding contributors file?
+* saving diffs instead of old contents in ChangeContents?
* supporting modules without source code and zip imports