First packaged version

This version of OSeMOSYS_step is the first packaged version.
The code has been comprehensively restructured for better modularity.
A few functions from the previous version are still missing though.
The package is now installable.

What's Changed

• General Update by @trevorb1 in #40
• Determining years of first step when having different step lengths by @HauHe in #45
• logging update by @trevorb1 in #43
• Fix solve logs dir error by @trevorb1 in #50
• Added env file by @trevorb1 in #51
• Update to README.md by @trevorb1 in #52
• Adds GLPK as a solver by @trevorb1 in #53
• Updated res capacity logic by @trevorb1 in #48
• Residual Capacity Fix by @trevorb1 in #56
• Fixed issue when passing NewCapacity to ResidualCapacity in next step… by @HauHe in #57
• Round new capacity by @trevorb1 in #58
• Added option to provide years of foresight. by @HauHe in #61
• Fixed issue that when foresight horizon reaches end of modelling peri… by @HauHe in #63
• Adds logic for gurobi solution check by @trevorb1 in #66
• Added if clause that creates a directory under results in case no ste… by @HauHe in #67
• New if function to check if there are subfolders in data/step* by @HauHe in #70
• Removed files that are not required for package. by @HauHe in #68
• Reduced rounding to one digit behind comma. by @HauHe in #72
• numpy floor instead of pandas round by @HauHe in #73
• Consideration of res_cap in all remaining steps when merging res_cap and new_cap by @HauHe in #75
• Fix to #77, ResidualCapacity read in of steps with options by @HauHe in #78
• Hauke/no rounding new cap by @HauHe in #80
• Package OSeMOSYS Step by @willu47 in #81
• Command to create directory structure to run OSeMOSYS_step in desired location by @HauHe in #84
• Removed Glpk dependency by @HauHe in #88
• packaging preparation by @HauHe in #87

New Contributors

• @trevorb1 made their first contribution in #40
• @willu47 made their first contribution in #81

Full Changelog: v0.1.0...v0.2.0