Merge pull request #608 from jeffvalk/current

Move generally useful functions to cider-util.
[Fix #609] Mention the exact cider-nrepl version that has to be installed
Extract cider-string-join helper
[#609] Clarify information about cider-nrepl dependency
Merge pull request #610 from jeffvalk/master

[Fix #569] Present stacktrace frames for all causes.
Merge pull request #611 from jeffvalk/master

Update README and CHANGELOG for stacktrace enhancements.
Merge pull request #612 from jeffvalk/master

Display compiler's error location in stacktrace.
[Fix #602] Parsimonious configuration of the stacktrace display
Merge pull request #603 from vitoshka/on-error

produce stacktrace buffer even when cider-popup-stacktraces is nil
[Fix #597] Don't process incomplete messages unless sure

  Probably also fixes the related #586.
Merge pull request #616 from vitoshka/nrepl-filter

[Fix #597] Don't process incomplete messages unless sure
[Fix #607] Don't eval pprint code in the tooling session

This way it will respect the *print-length* setting of the main session.

This also fixes #454.
Move entry to proper changelog section
[Fix #615] Allow error/stacktrace display without middleware.

...again.