proffer 0.1.0

pprof() passes ... to record_pprof() (#12, @krlmlr).
In the DESCRIPTION, unquote function names and add parentheses afterwards. (CRAN comments for next submission.)
Motivate profilers more in the README.
Increase font size in logo.
Search systems for pprof if the pprof_path env var is not set (#14, @krlmlr).
Use PROFFER_PPROF_BIN env var instead of pprof_path (#11, @krlmlr). pprof_path is still back-compatibly supported.
Introduce new environment variables PROFFER_GO_BIN and PROFFER_GRAPHVIZ_BIN to allow the user to set the paths to the respective binaries (#11, @krlmlr).
Add a new pprof_sitrep() function to give a situation report of the pprof installation, its dependencies, and their environment variables (#17, @krlmlr).
Add new function test_pprof().

proffer 0.0.2

Respond to CRAN feedback on version 0.0.1. Software and API names in the DESCRIPTION now appear in single quotes, the grammatical errors are gone, and new links reference the methodological background and context of proffer (https://github.com/google/pprof, https://developers.google.com/protocol-buffers, and https://github.com/r-prof/profile).
Use processx instead of callr (#5, @gaborcsardi).
Add Graphviz installation instructions.
Add pprof and Graphviz as system requirements.