Cut and Copied lines will now be on their own lines

In the current master branch, a cut line will be inserted from the cursor forward, which can result in some funky looking code if you happen to have you cursor in the middle of a line. This pull request remedies that by adding a pasteline function which basically replaces the past functionality as well. If a line was cut using cutline then it's clipboard contents will be assigned a fullline metadata attribute which can be looked for in the pasteline function. If it is present then, pasteLine will add a newline where the current cursors are and paste the lines that were cut correctly. This should even preserve the tabs that were a part of the line when cut or copied, though this hasn't been tested extensively.