Support switch template instructions
A switch variable can have multiple values
Add slim release support for runner script
Add slim marker file as automatic overlay
Change nodetool path to under releases/<RELEASE_VERSION>/
Add TODO comment to install_upgrade script template
Add 'p4' (Perforce) as a dependency type

This calls the 'p4' command-line tool to checkout and sync Perforce
trees. It involves significantly more special code in Rebar than
using 'git p4', but it eliminates the indirection of
Rebar->Git->Python->Perforce
Quote include/lib paths

In OTP-17.0 paths on windows are not shortpaths anymore
so they may contain spaces and parenthesis
Bump rebar version to 2.3.1
Update release notes for 2.3.1
Merge pull request #52 from shino/slim-release-support

Slim release support
Move include/rebar.hrl to src/rebar.hrl

rebar.hrl is only meant to be used by src/*.
improve behaviour of `rebar shell`

attempt to emulate the behavior of
`erl -pa ebin -pa deps/*/ebin`

fix error messages and formatting issues of `rebar shell` by
shutting down and restarting the user subsystem in a mode more
hospitable to the shell than the simple user started when run
as an escript. emulate `error_logger` behaviour when the shell
is run via `erl`

add documentation of the shell command

limitations:

the erlang interrupt handler is not enabled when running as an
escript and there is no interface to re-enable it via erlang code.
this means `ctrl-c` will immediately exit the running process
unlike when running the shell via `erl`. `ctrl-g` is, however,
unaffected

the user subsystem is killed and restarted but not supervised. if
your code somehow relies on the user subsystem crashing and
restarting `rebar shell` may interfere with it's operation
Error 'Command not found' when sname is used
When a node is configured with -sname the REMSH_NAME_PART argument should be defined with using command 'hostname' but error occurs due extra space
Merge pull request #280 from talentdeficit/bettershell

improve output when using `rebar shell`
Merge pull request #284 from habibutsu/master

Error 'Command not found' when sname is used
adding Alexander Verbitsky to THANKS file
Add qualified name tests specification (see #118)

Augment 'tests' option of 'rebar eunit' command with ability to specify
tests to run using module-qualified names. This change also forced me
to change the way modules for coverage and for testing itself are
selected - module-qualified tests specifications are now taken into
consideration. Extend tests to cover new functionality. Update
dialyzer_reference accordingly.
Fix #176

Extend CONTRIBUTING.md with regards to tests and credit.
Fix a format of a debug output