11-22-2007
 * NR lectures only available in the private version (requested by Kolya).
 * Added some corrections to PT5-PT12 (thanks to Kevin for the corrections).
10-11-2007
 * Implemented Kolya's corrections to NR04-NR10.
09-26-2007
 * Added some pictures to RB05.
09-25-2007
 * Trying out landscape twocolumn format. Do you like it?
09-20-2007
 * Minor corrections.
09-18-2007
 * Made private and public versions (requested by Kolya).
09-14-2007
 * Implemented Kolya's corrections to NR4-NR5.
 * Did some trimming and moving stuff around in NR4-NR5.
09-12-2007
 * Implemented Kolya's corrections to NR2-NR3 (still have corrections to NR4-NR5 to implement).
 * Moved some stuff around for clarity. Started changing all the $q(\tau)$'s to $\gamma(\tau)$'s.
 * Started adding coordinate-free versions of things in NR2-NR3.
09-06-2007
 * Implemented Kolya's corrections to NR2-NR3.
09-05-2007
 * Minor typographical and cosmetic corrections.
08-30-2007
 * Combined all the QFT stuff for my own convenience.
08-28-2007
 * No changelog yet.