Merge branch 'release/0.1.2'

* release/0.1.2:
  Add GNU parallel runscripts for parametric study
  Add missing period
  Ensure /usr/bin/time installed
  Change HOWSTRICT based on CXX for Intel
  update .gitignore
  remove -march=native
  Add -march=native to HOWFAST defaults
  Reduce dependencies of the 'check' target
  Permit precision selection at build time
  Provide hooks for compile-time precision selection
  reorder includes
  Use long double time
  Update copyright year
  Permit --burn=0 in Lorenz issue
  Kahan variant adding final error to sum
  Add suggested lorenz pipeline
  Add --more option to lorenz
Correct option parsing for --euler, --rk2

Closes #17
Merge branch 'hotfix/0.1.3' into develop

* hotfix/0.1.3:
  Correct option parsing for --euler, --rk2