* update truffle to include bugfix
* change prepack script to prepare
* add npx in compile script
* fix for older node
* rename script file to prepare
(cherry picked from commit 036dd9bd6e)
* update truffle to 5.0.14
* fix setup to test with solc-nightly
* switch to npx in script/test.sh
* please the linter
* rename build to prepack
* move download of nightly build to a compile script
* make compile script executable
* Now compiling in a separate directory using truffle 5.
* Ported to 0.5.1, now compiling using 0.5.1.
* test now also compiles using the truffle 5 hack.
* Downgraded to 0.5.0.
* Sorted scripts.
* Cleaned up the compile script a bit.