Log Message:
Update to 0.7.0:

Changes from 0.6.2 to 0.7.0:

   * Intel Advanced Vector Extensions (AVX) instruction support.
   * Multi-section binary support (see #71, #99, [2010]).
   * Add support for ELF32 and ELF64 TLS (thread local storage)
     relocations.
   * Allow use of 0X in addition to 0x to prefix hex constants (#127).
   * Allow underscores in hex, binary, and octal constants (e.g.
     0111_1111b).
   * Fix memory sizes on SSE/SSE2 instructions (#119).
   * Allow standalone prefixes (#122).
   * Simplify new varieties of sym-sym values (#124).
   * Support SAFESEH directive for win32 SEH handlers (#130).
   * Enable sym@FOO constructs in GAS parser.
   * SSE5 condition code support.
   * Other bugfixes.