\textnormal for \texttt

See #14, release log:

• edf60fa by @yegor256: #14 clean
• eb21253 by @yegor256: #14 iexec
• d348840 by @yegor256: #14 cat
• b02506b by @yegor256: #14 gs
• 76f327a by @yegor256: #14 clean
• 0652fdc by @yegor256: #14 pygments on mac
• 65d1c03 by @yegor256: #14 pygments on ubuntu
• 23b2ee4 by @yegor256: #14 pygments
• 0502ce0 by @yegor256: #14 mathtools
• a681f23 by @yegor256: #14 hypdoc
• b896bd6 by @yegor256: #14 pgf environ
• ce98859 by @yegor256: #14 pgfopts
• cc700e8 by @yegor256: #14 docshots
• 54edd41 by @yegor256: #14 pdfcrop
• 2fbf51a by @yegor256: #14 href-ul
• 5d871c3 by @yegor256: #14 microtype
• 6556395 by @yegor256: #14 cat
• 4971be8 by @yegor256: #14 rultor
• e89a5fb by @yegor256: #14 docshots and \textnormal
• 8bb1eeb by @yegor256: Merge pull request #13 from ye...
• and 7 more...

Released by Rultor 2.0-SNAPSHOT, see build log