added support for user specified variables

• support for user specified variables was added
• a couple of variables were defined as defcustom to allow for customization group

Some Refactoring maninly by Stefan Monnier

0.5.1

update version number to 0.5.1

change the version tag in file to match the latest release

a simple change to make the nongnu elpa version update to the latest update

added safe-lists behaviour to the docs

Merge pull request #17 from RampedIndent/patch-1

Added Safe-list usage to readme

Permit code block evaluation for files in safelist

Merge pull request #13 from fredericgiquel/babel-evaluation

Permit code block evaluation for files in safelist

take steps to remove the warning during installation

0.2.13

Update org-auto-tangle.el

changed the regexp to org-make-options-regexp

Merge pull request #7 from zzamboni/master

Improve auto_tangle regex

added a org-auto-tangle-default variable

0.2.11

corrected the arguments to org-auto-tangle-find-value function call

new regex used to parse the #+auto_tangle: option

improve the regex used to parse for the #+auto_tangle: option

again based on the recommendation by @riscy

minor fixes for on documentation strings code formatting

used a  more consice major mode check

based on a comment by @riscy the 
(string= (buffer-local-value 'major-mode (current-buffer)) "org-mode")
line is replaced by 
(eq major-mode 'org-mode)