Minor refactoring: change variable names in the "Finder" class
Add "close" functions for cleanup actions
Fix "om.tagfinder" import
Improve documentation in the "om.tagfinder" module
Rename "om.tagfinder" module to "om.finder"
Add "g:om_current_line_indicator" option
Add "g:om_nothing_found_msg" option
Add "g:om_buffer_search_modifier" option
Add support for project-wide searches