check first Index value #171
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Fix for reported bug #170. A library internal error occurs when a user modifies
historylength after it was previously used or cleaned. The fix allows the internal cleaner to recompose an internal Index if it detects a bad starting value, which can occur if you decide to reuse and cut downhistorywith methods such asTakeLast.I'm also adding an undocumented
history.RemoveIndex()extension that will allow a user to remove the internal index from a previously utilized or cleanedhistory. With this fix, you would not need this extension; however, I'm adding it in case there are unidentified reasons for a user to need to remove the internal indexing.