Give every package its own directory in packages/
including single-file packages.
Update rainbow-mode to version 0.2
rainbow-mode 0.3

* rainbow-mode.el: avoid colorizing HTML entities
rainbow-mode: version 0.4

* rainbow-mode.el: Use functions from color package to colorize HSL rather
  than our own copy.
rainbow-mode: version 0.5

* rainbow-mode.el: fix syntax error on
  `rainbow-hexadecimal-colors-font-lock-keywords'.
rainbow-mode: fix some LaTex docstrings
* rainbow-mode: update to 0.6, add support for ANSI coloring
rainbow-mode: version 0.7

* rainbow-mode.el: don't activate font-lock-mode
rainbow-mode: add support for R, bump version to 0.8

Signed-off-by: Julien Danjou <julien@danjou.info>