Add puzzle summaries

puzzles/basemath/summary.txt

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+1       base 10 counting
+2       base 2
+3       base 8
+4       base 16
+5       powers of 2

puzzles/bletchley/summary.txt

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+100     gzip 20G
+150     bz2recover
+200     scytale
+250     png as integer
+300     panzerfaust (word, letter)
+350     filenames of each gzip segment
+500     fast audio
+900     exif type
+1000    ???

puzzles/codebreaking/summary.txt

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+1       plain text, no crypto
+2       rot-1
+3       dancing men
+4       monoalphabetic substitution cipher
+5       bionicle substitution
+6       wiccan substitution
+7       scytale laid out in grid
+8       real scytale

puzzles/compaq/summary.txt

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+Danny wrote these, I have no idea.

puzzles/net-re/summary.txt

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+1       base math
+2       ASCII, Base64
+3       Application protocols 1
+4       MIME
+5       PCAP files and Wireshark
+6       Application protocols 2
+7       IP, TCP
+8       XOR masks
+10      Examine pcap
+20      Reconstruct image from HTTP in pcap
+30      Reconstruct image from FTP in pcap
+100     Hex decode
+200     Base64 decode
+250     Pull email out of pcap
+300     More pulling things out of pcap
+400     Still more pulling things out of pcap
+700	Base64, then xor
+800     DNS packet; you're going to have to do some research
+1000    16-byte xor key, but can be obtained with 1-byte
+1200    Another 16-byte xor key, can't be obtained with 1-byte
+2000    Paul's covert channel thingy
+3000    ICMP tunnel
+5000    ICMP tunnel, with xor
+25000   ICMP tunnel, with xor, multiplexed transfers

puzzles/sequence/summary.txt

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+1       Count to 6
+2       Binary
+8       Octal
+16      Hex
+19      Primes
+25      Squares
+35      Fibonacci
+50      Numbers from Lost TV show
+100     Geometric sequence in hex
+200     Music
+300     Unicode
+400     Gray sequence (really awful puzzle)
+450     Pascal strings
+600	X-Modem + xor
+700	Packet sequence numbers
+
+