Released
[http://sf.net/projects/tcl/files/Tcl/8.6.1/tcltk-release-notes-8.6.1.txt/view]
September 20, 2013

**Tcl Changes**
'''General'''
   * Extended scope of compiled code (should not technically be a behavior change)
   * Extended/improved support for platforms (Cygwin64, mingw-4.0, Debian, FreeBSD)
***Changed Tcl behavior***
   * Made regular expression parsing/matching less stack hungry
   * ''Limited'' support for threads and fork (to support [Rivet])
   * '''[string is] space''' reports that U+00202f is a space
   * Execution [trace] errors no longer swallowed
   * '''[auto_mkindex]''' extended to support TclOO
   * Made '''[binary encode] uuencode''' generate genuine uuencoded data
   ** '''Potential Incompatibility'''

'''Updated packages'''
   * [TclOO] 1.0.1
   * [http] 2.8.7
   * [msgcat] 1.5.2
   * [platform] 1.0.12
   * [tcltest] 2.3.6

**Tk Changes**
***Changed Tk behavior***
   * Fixed `<Control-v>` binding on Mac
   * Fixed `<<SelectPrevPara>>`, `<<SelectNextPara>>` bindings
   * Restored support for $[tk_strictMotif]

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