Created new branch sage-blocks
Merged default into sage-blocks
Added my current sage-blocks-functionality along with a bit of documentation
Incorporated Ivan's comments. sage-pull-next-block finds last sage-mode buffer.
Extract and print "titles" of blocks if they are given
Draft of update for compatibility with sage-mode 6.0
Some changes to allow backwards compatibility
Merged in jsrnielsen/sage-mode-jsrn/sage-blocks (pull request #2)

Add support functionality for structuring code in "sheets" with "blocks" of code.
Made keybindings opt-in
Fixed byte-compiler warning
Improved sage-forward-block, sage-backward-block, sage-send-current-block
Added prefix arguments to sage-backward-block and sage-forward-block
Fix sage-send-doctest

Fixes #36
Improve sage-view-enable-inline-output and sage-view-disable-inline-output

I think this fixes #28
Fix installation text
merge of sage-send-current-block: Ivan's improvements with my title printing
Merged in jsrnielsen/sage-mode-jsrn/sage-blocks (pull request #4)

Print "titles" of blocks in the inferior shell when they are sent
Fixed byte-compiler warning
Fixed working with "blank" lines in doctests

Fixes #37
Indentation and cleanup