org.texi: Clarification: `:exports' is only applicable to blocks, not to inline code

* doc/org.texi (Exporting code blocks, exports): Clarify.

The documentation change resulted from the expectation that `:exports'
could be used with inline code blocks, which is not the case.
Clarification was added to avoid future confusion on this header
argument, which is applicable only to blocks.

TINYCHANGE
org-element: Speed up parsing

* lisp/org-element.el (org-element-inline-babel-call-successor):
  Improve speed.
Merge branch 'master' of orgmode.org:org-mode
org.texi: Document -i in source code blocks

* org.texi (Literal examples): Add index entry.
(Editing source code): Document the -i flag.
org-src.el (org-src-preserve-indentation): Reformat docstring

* org-src.el (org-src-preserve-indentation): Reformat
docstring.
add org-effectiveness-advice feature
org-effectiveness.el (org-effectiveness-plot-ascii): fixed the problem changing the year in org-effectivenss-plot-ascii

* org-effectiveness.el (org-effectiveness-plot-ascii): fixed the problem changing the year in org-effectivenss-plot-ascii

TINYCHANGE
    org-effectiveness.el (org-effectiveness-plot-ascii): now we open a new buffer with the ascii bars

    * org-effectiveness.el (org-effectiveness-plot-ascii): now we open a new buffer with the ascii bars

    TINYCHANGE
Fix info docs compilation issue
Properly unescape optional part in file links

* lisp/org.el (org-open-at-point): Unescape optional part in file
  links.

This patch allows to handle properly links like:

  [[file:somefile.org::*headline%20with%20spaces]]

Thanks to Thomas Holst for reporting it.
Merge branch 'master' of orgmode.org:org-mode
ob-tangle: Fix `org-babel-under-commented-heading-p'

* lisp/ob-tangle.el (org-babel-under-commented-heading-p):
  `org-comment-string' is case sensitive and cannot be attached to
  other text.
ob-exp: During export ignore Babel code under commented headlines

* lisp/ob-exp.el (org-babel-exp-process-buffer): Skip code under
  a commented headline.
* testing/lisp/test-ob-exp.el (ob-export/export-under-commented-headline):
  New test.
clarification of commented code block export
fixed broken @index commands in documentation
Remove reference to hgroup in ox-html

* ox-html.el (org-html-html5-elements): Drop reference to hgroup.
Merge branch 'maint'
Merge branch 'master' of orgmode.org:org-mode
org.texi: Fix typos
org.el (org-insert-heading): Don't remove whitespaces following an empty headline

* org.el (org-insert-heading): Don't remove whitespaces
following an empty headline.

Thanks to Brady Trainor for reporting this.