Made command matching case-insensitive.
Fixed regular expressions of some commands.
Moved calculation of relative score to Score class.
Added better handling of ctrl+c kill event.
Added better validity checking of `solution` .cfg field.
Added utility function `get_input`.
Added `print_table` utility function.
Added class `Tag`.
Made `source` field in .cfg file required.
Added `tag`, `tag create` and `tag delete` commands.
Added `tag_cmp` command.
Improved output for multi-test run.
Enabled command history on Linux systems.
Added description of tagging to README.
Increased to version 1.2.0.