Refactor for pure julia codes; TSMLextra for external libs

• refactor code for fast docker image
• refactor code for package compiler dynamic library support
• separate RCall and PyCall support into TSMLextra

v2.1.0 (2019-05-29)

Diff since v2.0.0

Closed issues:

• Parameterise aggregator function for DateValgator and DateValNNer (#51)
• Error tagging new release (#40)
• Version 2.0.0 Release (#39)
• Documentation of main workflow with Documenter (#30)
• Outlierlizer: Normalize outliers (#19)
• Default TS cleaning/normalization pipeline as one function for CLI (#14)

Merged pull requests:

• PDF/HTML documentation dynamic generation fixes (#59) (ppalmes)
• Refactor to pure julia (#55) (ppalmes)
• Include static and interactive plotting (#54) (ppalmes)
• Parametric aggregator function (#50) (ppalmes)
• Outliernicer (#41) (ppalmes)