performance upgrade and map2loop update

Significant changes are:

• Finite difference interpolator is the default interpolator
• Conjugate gradient solver is the recommended solver
• Improved performance by automatically selecting the appropriate solver tolerance
• Splay faults and abutting faults are automatically added using the fault graph from map2loop

Other changes can be seen in the changelog

minor features and bug fixes

Added

• Added opacity to isosurface (a05385d by Lachlan Grose).
• Adding function to estimate fold hinge location (f3b45fe by Lachlan Grose).
• Added fault splay (7f0d92f by Lachlan Grose).
• Adding splay fault to fault builder (6e7ae27 by Lachlan Grose).
• Added ability to save current lavavu view (1bcdf83 by Lachlan Grose).
• Adding change log (e1ca83e by Lachlan Grose).

Changed

• Changed default dip annotation on map (5019cf6 by Lachlan Grose).

Fixed

• Fix (hopefully) incompatibility with lavavu versions due to numpy (ff0cda4 by Lachlan Grose).
• Fixed nan comparison error for folds (6bcafc7 by Lachlan Grose).
• Fixed bug with empty dataframe (64f6f1c by Lachlan Grose).
• Fix - fixing up import issues (bd4c0f3 by Lachlan Grose).

minor bugfixes

• updating intrusion example
• features created using fold interpolator did not have a link to the fold, this has been added

adding 3.8 and 3.9 to workflow

Typo in workflow meant wheels weren't being compiled for 3.8 and 3.9

build for all systems

• github action running build service for osx, unix and windows.
• numpy version fixed to 1.18 so that cython doesn't complain about binaries

conda windows

1.0.860

Update conda.yml

conda build for multiple python environments

1.0.85

(CONDA) updating conda build

new pip release because cython builds weren't included

1.0.84

Update __init__.py

bumping version to trigger docker build with tags for mybinder

1.0.83

Update __init__.py

bugfix - missing name in logger

(DOCKER) changing docker file and adding

dev docker file bumping version to 1.0.81