[elpa] externals/standard-themes updated (c21b591a71 -> 2a8d0d4545)

[ELPA Syncer]

elpasync pushed a change to branch externals/standard-themes.

      from  c21b591a71 Update the manual's Acknowledgements
       new  839536724a Implement system for palette overrides
       new  6e9e28b87e Fix broken link in the manual
       new  a61b01d16e Add link to video demo for overrides
       new  2a8d0d4545 Fix references to symbols


Summary of changes:
 README.org              | 75 +++++++++++++++++++++++++++++++++++++++++++++++++
 standard-dark-theme.el  |  7 ++++-
 standard-light-theme.el |  7 ++++-
 standard-themes.el      | 61 ++++++++++++++++++++++++++++++----------
 4 files changed, 133 insertions(+), 17 deletions(-)